Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current assets:
Cash and cash equivalents	$ 143,451	$ 145,610
Accounts receivable, net of allowance for doubtful accounts of $5,157 and $4,849, and estimated allowance for appeals of $5,348 and $6,614, at March 31, 2016 and December 31, 2015, respectively	165,796	169,146
Prepaid expenses	13,623	11,261
Deferred tax assets	4,226	7,460
Other current assets	2,723	3,051
Total current assets	329,819	336,528
Property and equipment, net	91,841	96,551
Goodwill	361,468	361,468
Intangible assets, net	49,265	54,308
Deferred financing costs, net	4,352	4,873
Other assets	4,278	4,329
Total assets	841,023	858,057
Current liabilities:
Accounts payable, accrued expenses and other liabilities	34,402	51,661
Estimated liability for appeals	30,613	33,078
Income taxes payable	274	3,873
Total current liabilities	65,289	88,612
Long-term liabilities:
Revolving credit facility	197,796	197,796
Deferred tax liabilities	37,147	38,421
Deferred rent	5,901	6,006
Other liabilities	3,006	2,520
Total long-term liabilities	243,850	244,743
Total liabilities	$ 309,139	$ 333,355
Commitments and contingencies (Note 11)
Shareholders' equity:
Preferred stock -- $0.01 par value; 5,000,000 shares authorized; none issued
Common stock -- $0.01 par value; 175,000,000 shares authorized; 95,406,154 shares issued and 84,132,408 shares outstanding at March 31, 2016; 95,263,461 shares issued and 83,989,715 shares outstanding at December 31, 2015	$ 954	$ 952
Capital in excess of par value	332,910	330,290
Retained earnings	293,034	288,474
Treasury stock, at cost: 11,273,746 shares at March 31, 2016 and December 31, 2015	(95,014)	(95,014)
Total shareholders' equity	531,884	524,702
Total liabilities and shareholders' equity	$ 841,023	$ 858,057