CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
ASSETS:
Cash and cash equivalents	$ 293,301	$ 368,550
Restricted cash and cash equivalents	49	4,091
Accounts receivable (net of allowance of $1,191 and $675, respectively)	80,135	53,444
Prepaid and other current assets	13,856	11,881
Current assets of discontinued operations	175	75
Total current assets	387,516	438,041
Property and equipment (net of accumulated depreciation of $12,689 and $13,043, respectively)	37,876	36,431
Goodwill	124,903	113,368
Intangible assets, net	81,654	81,125
Deferred income tax assets	73,163	20,156
Other non-current assets	1,793	1,910
Non-current assets of discontinued operations	2,428	2,428
Total assets	709,333	693,459
LIABILITIES:
Accounts payable, trade	11,066	9,250
Accrued expenses and other current liabilities	70,721	77,183
Current contingent consideration	7,283	46,576
Current liabilities of discontinued operations	18,782	14,507
Total current liabilities	107,852	147,516
Long-term debt	244,480	238,199
Non-current contingent consideration	7,958	11,273
Other non-current liabilities	1,615	1,597
Total liabilities	361,905	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; 15,138,620 and 14,218,572 shares issued, respectively, and 12,742,751 and 11,979,434 shares outstanding, respectively	151	142
Additional paid-in capital	1,110,688	1,087,582
Accumulated deficit	(632,910)	(708,354)
Treasury stock; 2,395,869 and 2,239,138 shares, respectively	(131,088)	(85,085)
Noncontrolling interest	587	589
Total shareholders' equity	347,428	294,874
Total liabilities and shareholders' equity	$ 709,333	$ 693,459