CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS [Abstract]
Net revenues	$ 125,892		$ 119,184		$ 379,510		$ 355,099
Operating expenses
Cost of revenues (exclusive of depreciation and amortization shown separately below)	53,806		49,938		161,044		146,595
Selling and marketing	31,725		32,167		98,756		102,526
General and administrative (exclusive of expenses shown separately below)	15,855		14,411		47,070		42,409
Research and development	3,703		2,934		10,608		8,737
Excise and sales tax expense			331		118		352
Depreciation	8,251		7,737		24,207		23,172
Amortization	807		1,612		3,239		5,061
Restructuring costs	590		38		703		38
Asset impairments	696		62		741		116
Net legal settlements and related expenses	1,769		43		1,851		115
Total operating expenses	117,202		109,273		348,337		329,121
Operating income	8,690		9,911		31,173		25,978
Other (expense) income
Interest expense	(1,843)		(2,192)		(5,404)		(6,381)
Interest income	10		7		19		34
Other, net	(282)		143		(531)		(235)
Total other expense	(2,115)		(2,042)		(5,916)		(6,582)
Income from continuing operations before income taxes	6,575		7,869		25,257		19,396
Income tax expense	855		2,047		6,618		5,789
Net income from continuing operations	5,720		5,822		18,639		13,607
(Loss) income from discontinued operations, net of taxes	(61)		6,735		(334)		6,740
Net income	$ 5,659		$ 12,557		$ 18,305		$ 20,347
BASIC WEIGHTED-AVERAGE SHARES OUTSTANDING	47,297		49,033		47,949		49,982
Basic net income (loss) per share (1)
Continuing operations	$ 0.12	[1]	$ 0.12	[1]	$ 0.39	[1]	$ 0.27	[1]
Discontinued operations		[1]	$ 0.14	[1]	$ (0.01)	[1]	$ 0.13	[1]
Net income per share	$ 0.12	[1]	$ 0.26	[1]	$ 0.38	[1]	$ 0.41	[1]
DILUTED WEIGHTED-AVERAGE SHARES OUTSTANDING	47,800		49,366		48,424		50,308
Diluted net income (loss) per share (1)
Continuing operations	$ 0.12	[1]	$ 0.12	[1]	$ 0.38	[1]	$ 0.27	[1]
Discontinued operations		[1]	$ 0.14	[1]	$ (0.01)	[1]	$ 0.13	[1]
Net income per share	$ 0.12	[1]	$ 0.25	[1]	$ 0.38	[1]	$ 0.40	[1]

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