CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities attributable to continuing operations:
Net income and comprehensive income	$ 31,524	$ 6,866
Less: Loss from discontinued operations, net of tax	4,333	932
Net income from continuing operations	35,857	7,798
Adjustments to reconcile income from continuing operations to net cash provided by operating activities attributable to continuing operations:
Loss on disposal of fixed assets	92	273
Amortization of intangibles	3,963	2,609
Depreciation	1,671	1,703
Rental amortization of intangibles and depreciation	202	262
Non-cash compensation expense	11,109	2,230
Deferred income taxes	(25,781)	(3,307)
Change in fair value of contingent consideration	(741)	8,746
Bad debt expense	56	157
Amortization of debt issuance costs	434	61
Amortization of convertible debt discount	2,799	0
Changes in current assets and liabilities:
Accounts receivable	(11,381)	(11,132)
Prepaid and other current assets	(515)	(269)
Accounts payable, accrued expenses and other current liabilities	(2,024)	6,086
Income taxes receivable	2,092	2,143
Other, net	158	176
Net cash provided by operating activities attributable to continuing operations	17,675	17,184
Cash flows from investing activities attributable to continuing operations:
Capital expenditures	(3,456)	(1,896)
Acquisition of SnapCap	(10)	0
Payments for (Proceeds from) Other Investing Activities	(34)	0
Net cash used in investing activities attributable to continuing operations	(3,500)	(1,896)
Cash flows from financing activities attributable to continuing operations:
Proceeds from stock options exercised	2,057
Payments Related to Tax Withholding for Share-based Compensation		(95)
Contingent consideration payments not made soon after acquisition date	(23,500)	0
Payment of debt issuance costs	(76)	0
Purchase of treasury stock	(12,099)	0
Net cash used in financing activities attributable to continuing operations	(33,618)	(95)
Total cash (used in) provided by continuing operations	(19,443)	15,193
Net cash used in operating activities attributable to discontinued operations	(2,644)	(891)
Total cash used in discontinued operations	(2,644)	(891)
Net (decrease) increase in cash, cash equivalents, restricted cash and restricted cash equivalents	(22,087)	14,302
Cash, cash equivalents, restricted cash and restricted cash equivalents at beginning of period	372,641	95,220
Cash, cash equivalents, restricted cash and restricted cash equivalents at end of period	$ 350,554	$ 109,522