0001001 - Document - COVER link:presentationLink link:calculationLink link:definitionLink 1001002 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS link:presentationLink link:calculationLink link:definitionLink 1002003 - Statement - CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) link:presentationLink link:calculationLink link:definitionLink 1003004 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF INCOME link:presentationLink link:calculationLink link:definitionLink 1004005 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY link:presentationLink link:calculationLink link:definitionLink 1005006 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS link:presentationLink link:calculationLink link:definitionLink 2101101 - Disclosure - DESCRIPTION OF BUSINESS link:presentationLink link:calculationLink link:definitionLink 2402401 - Disclosure - DESCRIPTION OF BUSINESS (Details) link:presentationLink link:calculationLink link:definitionLink 2103102 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES link:presentationLink link:calculationLink link:definitionLink 2204201 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies) link:presentationLink link:calculationLink link:definitionLink 2405402 - Disclosure - BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) link:presentationLink link:calculationLink link:definitionLink 2106103 - Disclosure - TRANSACTIONS WITH ENSIGN link:presentationLink link:calculationLink link:definitionLink 2407403 - Disclosure - TRANSACTIONS WITH ENSIGN (Details) link:presentationLink link:calculationLink link:definitionLink 2108104 - Disclosure - COMPUTATION OF NET (LOSS) INCOME PER COMMON SHARE link:presentationLink link:calculationLink link:definitionLink 2309301 - Disclosure - COMPUTATION OF NET (LOSS) INCOME PER COMMON SHARE (Tables) link:presentationLink link:calculationLink link:definitionLink 2410404 - Disclosure - COMPUTATION OF NET (LOSS) INCOME PER COMMON SHARE - RECONCILIATION (Details) link:presentationLink link:calculationLink link:definitionLink 2111105 - Disclosure - REVENUE AND ACCOUNTS RECEIVABLE link:presentationLink link:calculationLink link:definitionLink 2312302 - Disclosure - REVENUE AND ACCOUNTS RECEIVABLE (Tables) link:presentationLink link:calculationLink link:definitionLink 2413405 - Disclosure - REVENUE AND ACCOUNTS RECEIVABLE - NARRATIVE (Details) link:presentationLink link:calculationLink link:definitionLink 2414406 - Disclosure - REVENUE AND ACCOUNTS RECEIVABLE - REVENUE BY MAJOR PAYOR (Details) link:presentationLink link:calculationLink link:definitionLink 2415407 - Disclosure - REVENUE AND ACCOUNTS RECEIVABLE - ACCOUNTS RECEIVABLE (Details) link:presentationLink link:calculationLink link:definitionLink 2116106 - Disclosure - BUSINESS SEGMENTS link:presentationLink link:calculationLink link:definitionLink 2317303 - Disclosure - BUSINESS SEGMENTS (Tables) link:presentationLink link:calculationLink link:definitionLink 2418408 - Disclosure - BUSINESS SEGMENTS - NARRATIVE (Details) link:presentationLink link:calculationLink link:definitionLink 2419409 - Disclosure - BUSINESS SEGMENTS - FINANCIAL DATA (Details) link:presentationLink link:calculationLink link:definitionLink 2420410 - Disclosure - BUSINESS SEGMENTS - INCOME FROM OPERATIONS (Details) link:presentationLink link:calculationLink link:definitionLink 2121107 - Disclosure - ACQUISITIONS link:presentationLink link:calculationLink link:definitionLink 2422411 - Disclosure - ACQUISITIONS (Details) link:presentationLink link:calculationLink link:definitionLink 2123108 - Disclosure - PROPERTY AND EQUIPMENT—NET link:presentationLink link:calculationLink link:definitionLink 2324304 - Disclosure - PROPERTY AND EQUIPMENT—NET (Tables) link:presentationLink link:calculationLink link:definitionLink 2425412 - Disclosure - PROPERTY AND EQUIPMENT—NET (Details) link:presentationLink link:calculationLink link:definitionLink 2126109 - Disclosure - GOODWILL AND OTHER INDEFINITE-LIVED INTANGIBLE ASSETS link:presentationLink link:calculationLink link:definitionLink 2327305 - Disclosure - GOODWILL AND OTHER INDEFINITE-LIVED INTANGIBLE ASSETS (Tables) link:presentationLink link:calculationLink link:definitionLink 2428413 - Disclosure - GOODWILL AND OTHER INDEFINITE-LIVED INTANGIBLE ASSETS - ACTIVITY IN GOODWILL (Details) link:presentationLink link:calculationLink link:definitionLink 2429414 - Disclosure - GOODWILL AND OTHER INDEFINITE-LIVED INTANGIBLE ASSETS - INDEFINITE-LIVED INTANGIBLE ASSETS (Details) link:presentationLink link:calculationLink link:definitionLink 2430415 - Disclosure - GOODWILL AND OTHER INDEFINITE-LIVED INTANGIBLE ASSETS - NARRATIVE (Details) link:presentationLink link:calculationLink link:definitionLink 2131110 - Disclosure - OTHER ACCRUED LIABILITIES link:presentationLink link:calculationLink link:definitionLink 2332306 - Disclosure - OTHER ACCRUED LIABILITIES (Tables) link:presentationLink link:calculationLink link:definitionLink 2433416 - Disclosure - OTHER ACCRUED LIABILITIES (Details) link:presentationLink link:calculationLink link:definitionLink 2134111 - Disclosure - DEBT link:presentationLink link:calculationLink link:definitionLink 2335307 - Disclosure - DEBT (Tables) link:presentationLink link:calculationLink link:definitionLink 2436417 - Disclosure - DEBT - SCHEDULE OF LONG-TERM DEBT (Details) link:presentationLink link:calculationLink link:definitionLink 2437418 - Disclosure - DEBT - NARRATIVE (Details) link:presentationLink link:calculationLink link:definitionLink 2138112 - Disclosure - OPTIONS AND AWARDS link:presentationLink link:calculationLink link:definitionLink 2339308 - Disclosure - OPTIONS AND AWARDS (Tables) link:presentationLink link:calculationLink link:definitionLink 2440419 - Disclosure - OPTIONS AND AWARDS - SHARE-BASED COMPENSATION (Details) link:presentationLink link:calculationLink link:definitionLink 2441420 - Disclosure - OPTIONS AND AWARDS - SHARE-BASED COMPENSATION EXPENSE AND NARRATIVE (Details) link:presentationLink link:calculationLink link:definitionLink 2442421 - Disclosure - OPTIONS AND AWARDS - OPTIONS GRANTED (Details) link:presentationLink link:calculationLink link:definitionLink 2443422 - Disclosure - OPTIONS AND AWARDS - EMPLOYEE STOCK OPTION ACTIVITY (Details) link:presentationLink link:calculationLink link:definitionLink 2444423 - Disclosure - OPTIONS AND AWARDS - RESTRICTED STOCK (Details) link:presentationLink link:calculationLink link:definitionLink 2145113 - Disclosure - LEASES link:presentationLink link:calculationLink link:definitionLink 2346309 - Disclosure - LEASES (Tables) link:presentationLink link:calculationLink link:definitionLink 2447424 - Disclosure - LEASES - NARRATIVE (Details) link:presentationLink link:calculationLink link:definitionLink 2448425 - Disclosure - LEASES - IMPACT OF NEW LEASES GUIDANCE (Details) link:presentationLink link:calculationLink link:definitionLink 2449426 - Disclosure - LEASES - FUTURE MINIMUM LEASE PAYMENTS (Details) link:presentationLink link:calculationLink link:definitionLink 2449426 - Disclosure - LEASES - FUTURE MINIMUM LEASE PAYMENTS (Details) link:presentationLink link:calculationLink link:definitionLink 2150114 - Disclosure - INCOME TAXES link:presentationLink link:calculationLink link:definitionLink 2451427 - Disclosure - INCOME TAXES (Details) link:presentationLink link:calculationLink link:definitionLink 2152115 - Disclosure - COMMITMENTS AND CONTINGENCIES link:presentationLink link:calculationLink link:definitionLink 2453428 - Disclosure - COMMITMENTS AND CONTINGENCIES (Details) link:presentationLink link:calculationLink link:definitionLink