CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current assets:
Cash and cash equivalents	$ 95,879	$ 93,366
Accounts receivable, net of allowance for doubtful accounts of $1,232 and $916, respectively and estimated allowance for appeals of $7,161 and $13,939, at June 30, 2014 and December 31, 2013, respectively	164,543	171,726
Prepaid expenses	10,910	12,942
Prepaid income taxes	335	6,792
Other current assets	470	489
Total current assets	272,137	285,315
Property and equipment, net	118,300	123,006
Goodwill	361,468	361,468
Intangible assets, net	84,931	95,312
Deferred financing costs	7,999	9,041
Other assets	4,505	4,460
Total assets	849,340	878,602
Current liabilities:
Accounts payable, accrued expenses and other liabilities	34,065	37,123
Acquisition related contingent consideration	528	945
Deferred tax liabilities	5,910	6,326
Estimated liability for appeals	35,720	41,852
Total current liabilities	76,223	86,246
Long-term liabilities:
Deferred rent	2,208	724
Revolving credit facility	197,796	232,796
Other liabilities	3,268	3,874
Deferred tax liabilities	49,338	52,523
Total long-term liabilities	252,610	289,917
Total liabilities	328,833	376,163
Commitments and Contingencies
Shareholders' equity:
Preferred stock-$0.01 par value; 5,000,000 shares authorized; none issued
Common stock-$0.01 par value; 125,000,000 shares authorized; 94,249,982 shares issued and 87,723,677 shares outstanding at June 30, 2014; 93,826,453 shares issued and 87,300,148 shares outstanding at December 31, 2013	940	936
Capital in excess of par value	305,190	296,517
Retained earnings	259,391	250,000
Treasury stock, at cost: 6,526,305 shares at June 30, 2014 and at December 31, 2013	(45,014)	(45,014)
Total shareholders' equity	520,507	502,439
Total liabilities and shareholders' equity	$ 849,340	$ 878,602