CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Current assets:
Cash and cash equivalents	$ 29,772	$ 59,582
Accounts receivable, net of allowance for doubtful accounts of $1,668 and $1,883, respectively	18,539	17,588
Prepaid expenses and other assets	13,270	11,217
Total current assets	61,581	88,387
Property and equipment, net	198,369	142,289
Investment in joint venture	2,936	2,265
Intangible assets, net	26,886	14,698
Goodwill	59,471	39,464
Deposits and other assets	5,371	3,600
Deferred tax asset, net	2,096	2,439
Total assets	356,710	293,142
Current liabilities:
Accounts payable	21,746	25,383
Accrued liabilities	9,152	8,975
Deferred revenues	2,475	3,268
Revolving credit facility	100
Capital lease obligations	2,154	1,071
Term loan, less discount of $206 and $116, respectively	2,794	884
Restructuring liability	2,709	2,691
Other current liabilities	151	135
Total current liabilities	41,281	42,407
Deferred revenues	2,323	2,134
Capital lease obligations	38,923	19,139
Term loan, less discount of $367 and $328, respectively	55,383	18,422
Accrued contingent consideration	4,626
Restructuring liability	4,884	5,273
Deferred rent	16,100	16,655
Other long-term liabilities	1,020	501
Total liabilities	164,540	104,531
Commitments and contingencies
Stockholders' equity:
Preferred stock, $0.001 par value, 20,000 shares authorized; no shares issued or outstanding
Common stock, $0.001 par value; 120,000 shares authorized; 52,528 and 52,017 shares outstanding, respectively	53	52
Additional paid-in capital	1,235,554	1,229,684
Treasury stock, at cost, 231 and 115 shares, respectively	(1,266)	(520)
Accumulated deficit	(1,041,872)	(1,040,170)
Accumulated items of other comprehensive loss	(299)	(435)
Total stockholders' equity	192,170	188,611
Total liabilities and stockholders' equity	$ 356,710	$ 293,142