CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Cash and cash equivalents	$ 11,759	$ 15,410
Accounts receivable, net	90,869	86,869
Prepaid expenses	7,383	6,043
Inventories	4,365	3,897
Deferred income taxes	810	540
Other	5,834	7,429
Property and equipment, net	224,714	221,050
Goodwill	504,302	485,859
Intangible assets, net	33,797	35,044
Other assets	40,695	43,381
Accounts payable	35,261	27,538
Accrued expenses	50,883	46,401
Income taxes payable	2,327	2,951
Other current liabilities	8,625	7,684
Other long-term liabilities	23,950	22,130
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,025	1,025
Common stock, shares issued (in shares)	1,025	1,025
Common stock, shares outstanding (in shares)	1,025	1,025
Consolidated VIEs
Cash and cash equivalents	5,059	3,320
Accounts receivable, net	10,197	10,155
Prepaid expenses	495	473
Inventories	521	411
Deferred income taxes	6	0
Other	13	6
Property and equipment, net	21,830	20,271
Goodwill	23,890	18,929
Intangible assets, net	3,463	1,296
Other assets	8,570	8,050
Accounts payable	1,362	2,381
Accrued expenses	2,392	3,622
Income taxes payable	200	95
Other current liabilities	13	0
Other long-term liabilities	$ 2,424	$ 2,233