CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Net revenue		$ 140,967	$ 140,383	$ 427,593	$ 427,909
Operating expenses
Cost of revenue (exclusive of depreciation and amortization shown separately below)		56,302	57,965	170,343	176,508
Selling and marketing		37,000	36,813	111,125	112,242
General and administrative (exclusive of expenses shown separately below)		19,336	17,810	60,509	54,815
Research and development		5,793	5,534	16,385	14,655
Excise and sales tax expense		331	0	331	0
Depreciation		8,886	8,697	26,350	26,248
Amortization		3,962	2,582	12,399	7,549
Restructuring costs		49	68	4,195	68
Asset impairments		1	4,938	151	4,938
Net legal settlements and related expenses		(10)	172	(21)	172
Acquisition/divestiture-related costs		2,421	2,147	6,021	5,838
Total operating expenses		134,071	136,726	407,788	403,033
Operating income		6,896	3,657	19,805	24,876
Other (expense) income
Interest expense		(2,975)	(2,133)	(8,478)	(6,618)
Interest income		2	5	16	25
Other, net		(1,018)	741	(616)	996
Total other expense, net		(3,991)	(1,387)	(9,078)	(5,597)
Income from continuing operations before income taxes		2,905	2,270	10,727	19,279
Income tax (benefit) expense		(553)	(376)	1,002	5,230
Net income from continuing operations		3,458	2,646	9,725	14,049
Loss from discontinued operations, net of taxes		(119)	(100)	(453)	(283)
Net income		$ 3,339	$ 2,546	$ 9,272	$ 13,766
BASIC WEIGHTED-AVERAGE SHARES OUTSTANDING		44,133	45,162	44,365	45,797
Basic net income (loss) per share
Continuing operations (in dollars per share)	[1]	$ 0.08	$ 0.06	$ 0.22	$ 0.31
Discontinued operations (in dollars per share)	[1]	0.00	0.00	(0.01)	(0.01)
Net income per share (in dollars per share)	[1]	$ 0.08	$ 0.06	$ 0.21	$ 0.30
DILUTED WEIGHTED-AVERAGE SHARES OUTSTANDING		45,002	45,898	45,028	46,485
Diluted net income (loss) per share
Continuing operations (in dollars per share)	[1]	$ 0.08	$ 0.06	$ 0.22	$ 0.30
Discontinued operations (in dollars per share)	[1]	0.00	0.00	(0.01)	(0.01)
Net income per share (in dollars per share)	[1]	$ 0.07	$ 0.06	$ 0.21	$ 0.30

[1] Column totals may not sum due to the effect of rounding on EPS.