Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2012

Stockholders' Equity Note [Abstract]

Schedule Of Share Based Payment Award Stock Options Valuation Assumptions [Table Text Block]

	2010
Expected term (years)	5.0 - 6.5
Volatility	52.6% - 55.8%
Risk-free interest rate	2% - 2.9%

Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding and Exercisable [Table Text Block]

				Weighted
			Weighted	Average	Aggregate
			Average	Remaining	Intrinsic
		Shares	Exercise	Contractual	Value
		(in thousands)	Price	Term	(in thousands)
Outstanding at January 1, 2012		1,087	$ 7.27
	Exercised	(320)	$ 6.62
	Forfeited	(14)	$ 5.86
	Expired	(34)	$ 5.93
Outstanding at December 31, 2012		719	$ 7.65	3.7 years	$ 1,503
Exercisable at December 31, 2012		676	$ 7.71	3.5 years	$ 1,377

Schedule of Share-based Compensation, Restricted Stock Units Award Activity [Table Text Block]

				Weighted
				Average
				Grant Date
		Shares		Fair Value
Nonvested at January 1, 2012		1,561	$	6.89
	Granted	731	$	9.23
	Vested	(1,156)	$	5.73
	Forfeited	(9)	$	10.90
Nonvested at December 31, 2012		1,127	$	9.59

Schedule Of Share-based Compensation [Table Text Block]

		2012	2011	2010
Share-based compensation expense	$	5,072	7,243	5,385
Adjustment to fair value of liability classified awards		(32)	(623)	1,348
Total share-based compensation expense	$	5,040	6,620	6,733