Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Statement of Cash Flows [Abstract]
Net loss	$ (14,075)	$ (24,404)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization	19,539	20,222
Amortization of intangible assets	18,145	17,961
Stock-based compensation expense	8,288	8,932
Other, net	3,433	3,192
Changes in operating assets and liabilities:
Accounts receivable	(4,590)	(7,419)
Prepaid expenses and other assets	278	(2,510)
Accounts payable	(4,351)	2,254
Accrued expenses and other liabilities	(3,130)	349
Deferred revenue	3,525	3,577
Net cash provided by operating activities	27,062	22,154
Cash flows from investing activities:
Capitalized software development costs	(19,108)	(18,594)
Capital expenditures	(1,413)	(10,589)
Maturities of investments	12,384	6,750
Acquisition, net of cash acquired	(6,334)	0
Purchase of a cost method investment	0	(1,000)
Net cash used in investing activities	(14,471)	(23,433)
Cash flows from financing activities:
Purchases of treasury stock	(11,489)	0
Payments on long-term debt	(1,727)	(600)
Other, net	200	1,887
Net cash (used in) provided by financing activities	(13,016)	1,287
Effect of foreign exchange rate changes on cash and cash equivalents	412	(1,255)
Net decrease in cash and cash equivalents	(13)	(1,247)
Cash and cash equivalents at beginning of period	47,875	40,682
Cash and cash equivalents at end of period	$ 47,862	$ 39,435