Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2012

Stockholders' Equity Note [Abstract]

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
			Exercise	Contractual	Value
		Shares	Price	Term	(in thousands)
Outstanding at January 1, 2012		1,087	$ 7.27
	Exercised	(188)	$ 7.26
	Forfeited	(5)	$ 6.93
	Expired	(11)	$ 6.14
Outstanding at June 30, 2012		883	$ 7.29	3.76 years	$ 1,124
Exercisable at June 30, 2012		810	$ 7.33	3.50 years	$ 1,008

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		1,556	$	6.89
	Granted	420	$	10.53
	Vested	(984)	$	4.87
	Forfeited	(2)	$	8.80
Nonvested at June 30, 2012		990	$	10.42

Schedule Of Share-based Compensation [Table Text Block]

		2012	2011
Employee share-based compensation expense	$	2,831	2,968
Adjustment to fair value of liability classified awards		(236)	(128)
Total share-based compensation expense	$	2,595	2,840