VARIABLE INTEREST ENTITIES (Details) (USD $)
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
VARIABLE INTEREST ENTITIES      
Accounts receivable $ 26,037,000 $ 18,782,000  
Property and equipment, net 151,064,000 102,449,000  
Goodwill 5,023,000 3,600,000 2,680,000
Other assets 3,611,000 122,000  
Accounts payable 19,503,000 12,075,000  
Accrued expenses 13,730,000 9,881,000  
Noncontrolling interest (838,000) (841,000)  
Riverchase Village Facility
     
VARIABLE INTEREST ENTITIES      
Cash (38,000) 16,000  
Accounts receivable   10,000  
Restricted investments 343,000 451,000  
Property and equipment, net 5,974,000 5,999,000  
Other assets 391,000 432,000  
Total assets 6,670,000 6,908,000  
Accounts payable 1,316,000 740,000  
Accrued expenses 67,000 174,000  
Current portion of notes payable 92,000 99,000  
Notes payable, net of current portion 6,033,000 6,077,000  
Noncontrolling interest (838,000) (182,000)  
Total liabilities 6,670,000 6,908,000  
Oklahoma Facilities
     
VARIABLE INTEREST ENTITIES      
Cash   180,000  
Accounts receivable   800,000  
Property and equipment, net   9,988,000  
Goodwill   1,123,000  
Other assets   641,000  
Total assets   12,732,000  
Accounts payable   458,000  
Accrued expenses   356,000  
Current portion of notes payable   189,000  
Notes payable, net of current portion   12,389,000  
Noncontrolling interest   (660,000)  
Total liabilities   $ 12,732,000