CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
ASSETS:
Cash and cash equivalents	$ 346,470	$ 368,550
Restricted cash and cash equivalents	4,084	4,091
Accounts receivable (net of allowance of $714 and $675, respectively)	64,769	53,444
Prepaid and other current assets	13,551	11,881
Current assets of discontinued operations	175	75
Total current assets	429,049	438,041
Property and equipment (net of accumulated depreciation of $12,901 and $13,043, respectively)	37,560	36,431
Goodwill	113,368	113,368
Intangible assets, net	77,035	81,125
Deferred income tax assets	45,406	20,156
Other non-current assets	1,933	1,910
Non-current assets of discontinued operations	2,428	2,428
Total assets	706,779	693,459
LIABILITIES:
Accounts payable, trade	4,726	9,250
Accrued expenses and other current liabilities	78,150	77,183
Current contingent consideration	28,357	46,576
Current liabilities of discontinued operations	17,449	14,507
Total current liabilities	128,682	147,516
Long-term debt	241,332	238,199
Non-current contingent consideration	5,251	11,273
Other non-current liabilities	1,611	1,597
Total liabilities	376,876	398,585
Commitments and contingencies
SHAREHOLDERS' EQUITY:
Preferred stock $.01 par value; 5,000,000 shares authorized; none issued or outstanding	0	0
Common stock $.01 par value; 50,000,000 shares authorized; 14,691,595 and 14,218,572 shares issued, respectively, and 12,422,041 and 11,979,434 shares outstanding, respectively	147	142
Additional paid-in capital	1,100,743	1,087,582
Accumulated deficit	(675,457)	(708,354)
Treasury stock; 2,269,554 and 2,239,138 shares, respectively	(96,085)	(85,085)
Noncontrolling interest	555	589
Total shareholders' equity	329,903	294,874
Total liabilities and shareholders' equity	$ 706,779	$ 693,459