CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
ASSETS:
Cash and cash equivalents	$ 105,102	$ 368,550
Restricted cash and cash equivalents	56	4,091
Accounts receivable (net of allowance of $1,143 and $675, respectively)	91,072	53,444
Prepaid and other current assets	16,428	11,881
Assets held for sale	21,328	0
Current assets of discontinued operations	185	75
Total current assets	234,171	438,041
Property and equipment (net of accumulated depreciation of $13,887 and $13,043, respectively)	23,175	36,431
Goodwill	348,347	113,368
Intangible assets, net	205,699	81,125
Deferred income tax assets	79,289	20,156
Other non-current assets	2,168	1,910
Non-current assets of discontinued operations	3,266	2,428
Total assets	896,115	693,459
LIABILITIES:
Revolving credit facility, outstanding amount	125,000	0
Accounts payable, trade	15,074	9,250
Accrued expenses and other current liabilities	93,190	77,183
Current contingent consideration	11,080	46,576
Current liabilities of discontinued operations (Note 19)	17,609	14,507
Total current liabilities	261,953	147,516
Long-term debt, net of current portion	250,943	238,199
Non-current contingent consideration	27,757	11,273
Other non-current liabilities	8,360	1,597
Deferred income tax liabilities	894	0
Total liabilities	549,907	398,585
Commitments and contingencies (Notes 14 and 15)
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; 15,428,351 and 14,218,572 shares issued, respectively, and 12,809,764 and 11,979,434 shares outstanding, respectively	154	142
Additional paid-in capital	1,134,227	1,087,582
Accumulated deficit	(610,482)	(708,354)
Treasury stock; 2,618,587 and 2,239,138 shares, respectively	(177,691)	(85,085)
Noncontrolling interest (Note 8)	0	589
Total shareholders' equity	346,208	294,874
Total liabilities and shareholders' equity	$ 896,115	$ 693,459