CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Cash flows from operating activities:
Net income (loss)	$ (5,398)	$ (10,968)	$ 27,612
Adjustments to reconcile net income (loss) to net cash flows from operating activities:
Depreciation	9,849	9,298	10,944
Amortization of intangible assets	6,787	13,894	16,257
Deferred income taxes	(3,268)	(989)	(3,698)
Amortization of deferred financing costs	324	402	365
Stock based compensation	11,145	10,185	7,498
Change in acquisition related contingencies	0	0	153
Impairment of goodwill	15,369	34,818	0
Impairment of intangible assets	9,252	0	0
Loss on disposal of fixed assets	0	0	22
Change in accrual for unrecognized tax benefits	(923)	44	774
Loss on sale of business	639	0	0
Changes in operating assets and liabilities, net of the effects of acquisitions:
Accounts receivable	2,281	(2,140)	(9,709)
Prepaid expense and other assets	(132)	1,734	(1,142)
Accounts payable and accrued expenses	(2,954)	(1,054)	(1,069)
Income taxes receivable/payable	(485)	5,906	(1,626)
Deferred revenue	2,370	(571)	8,767
Other, net	(280)	250	395
Net cash flows from operating activities	44,576	60,809	55,543
Cash flows from investing activities:
Cash received from sale of business	2,429	0	0
Purchases of fixed assets	(11,699)	(9,078)	(8,710)
Payments for acquisitions, net of cash acquired	0	0	(27,001)
Purchases of cost method investments	(1,500)	0	0
Net cash flows from investing activities	(10,770)	(9,078)	(35,711)
Cash flows from financing activities:
Payments on long-term debt	(42,000)	(138,500)	(37,500)
Proceeds from long-term debt	27,000	129,000	29,000
Payments under stock repurchase plan	(29,572)	(38,212)	(33,007)
Payment of acquisition related contingencies	0	(3,829)	(5,825)
Proceeds from stock option exercises	2,806	7,010	14,113
Purchase of treasury stock related to vested restricted stock	(2,868)	(1,835)	(1,319)
Excess tax benefit over book expense from stock based compensation	421	2,350	3,125
Financing costs paid	0	(646)	0
Net cash flows from financing activities	(44,213)	(44,662)	(31,413)
Effect of exchange rate changes	(656)	204	(993)
Net change in cash and cash equivalents for the period	(11,063)	7,273	(12,574)
Cash, beginning of period	34,050	26,777	39,351
Cash, end of period	$ 22,987	$ 34,050	$ 26,777