CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2013		Jun. 30, 2012		Jun. 30, 2013		Jun. 30, 2012
Net revenues	$ 132,178		$ 127,015		$ 261,670		$ 253,618
Operating expenses
Cost of revenues (exclusive of depreciation and amortization shown separately below)	56,856		53,788		112,363		107,238
Selling and marketing	34,382		32,997		68,545		67,031
General and administrative (exclusive of expenses shown separately below)	16,186		15,934		31,679		31,215
Research and development	3,831		3,526		7,554		6,905
Excise and sales tax expense	77		118		77		118
Depreciation	8,331		8,011		16,570		15,956
Amortization	392		1,212		854		2,432
Restructuring costs (income)	131		(48)		201		113
Asset impairments	54		20		198		45
Net legal settlements and related expenses	220		62		313		82
Acquisition-related costs	212		0		239		0
Total operating expenses	120,672		115,620		238,593		231,135
Operating income	11,506		11,395		23,077		22,483
Other (expense) income
Interest expense	(1,527)		(1,789)		(3,328)		(3,561)
Interest income	50		5		71		9
Other, net	188		(179)		218		(249)
Total other expense, net	(1,289)		(1,963)		(3,039)		(3,801)
Income from continuing operations before income taxes	10,217		9,432		20,038		18,682
Income tax expense	2,109		2,739		4,749		5,763
Net income from continuing operations	8,108		6,693		15,289		12,919
Loss from discontinued operations, net of taxes	(133)		(226)		(236)		(273)
Net income	$ 7,975		$ 6,467		$ 15,053		$ 12,646
BASIC WEIGHTED-AVERAGE SHARES OUTSTANDING	46,204		48,103		46,146		48,279
Basic net income (loss) per share
Continuing operations	$ 0.18	[1]	$ 0.14	[1]	$ 0.33	[1]	$ 0.27	[1]
Discontinued operations	$ 0.00	[1]	$ 0.00	[1]	$ (0.01)	[1]	$ (0.01)	[1]
Net income per share	$ 0.17	[1]	$ 0.13	[1]	$ 0.33	[1]	$ 0.26	[1]
DILUTED WEIGHTED-AVERAGE SHARES OUTSTANDING	46,720		48,551		46,618		48,740
Diluted net income (loss) per share
Continuing operations	$ 0.17	[1]	$ 0.14	[1]	$ 0.33	[1]	$ 0.27	[1]
Discontinued operations	$ 0.00	[1]	$ 0.00	[1]	$ (0.01)	[1]	$ (0.01)	[1]
Net income per share	$ 0.17	[1]	$ 0.13	[1]	$ 0.32	[1]	$ 0.26	[1]

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