Share-Based Compensation and Employee Benefit Plans (Tables)

12 Months Ended

Dec. 31, 2012

Share-Based Compensation and Employee Benefit Plans [Abstract]

Schedule of Share-based Compensation, Shares Authorized under Stock Option Plans, by Exercise Price Range [Table Text Block]

The options outstanding and exercisable at December 31, 2012 were in the following exercise price ranges:

	Options Outstanding				Options Exercisable
Range of Exercise Prices	Shares	Weighted Average Remaining Contractual Life (years)	Weighted Average Exercise Price		Shares	Weighted Average Exercise Price
$6.80 - $7.86	399	6.5	$	6.90	318	$	6.91
$8.60 - $14.81	439	5.5	$	12.65	244	$	13.26
$15.04 - $18.20	374	0.6	$	16.31	374	$	16.31
$18.39 - $29.85	275	1.0	$	24.09	275	$	24.09
$6.80 - $29.85	1,487	3.7	$	14.15	1,211	$	15.00

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

A summary of the Company’s restricted stock unit activity with respect to the years ended December 31, 2010, 2011 and 2012 follows:

	Number of Shares		Weighted Average Grant Date Fair Value
Nonvested at December 31, 2009	1,372		$	7.72
Granted	487		$	7.58
Vested	(377	)	$	9.23
Forfeited	(27	)	$	7.97
Nonvested at December 31, 2010	1,455		$	7.28
Granted	535		$	10.25
Vested	(436	)	$	8.46
Forfeited	(89	)	$	7.26
Nonvested at December 31, 2011	1,465		$	8.01
Granted	409		$	9.81
Vested	(457	)	$	8.53
Forfeited	(37	)	$	8.16
Nonvested at December 31, 2012	1,380		$	8.37

The following table reflects share-based compensation expense by type of award:

	Year Ended December 31,
	2010			2011			2012
Share-based compensation expense:
Stock options	$	618		$	404		$	282
Restricted stock units	4,821			4,398			3,719
Total share-based compensation	5,439			4,802			4,001
Tax effect on share-based compensation	2,230			1,902			1,551
Net effect on net income	$	3,209		$	2,900		$	2,450
Tax effect on:
Cash flows from financing activities	$	242		$	528		$	211
Effect on earnings per share—basic	$	(0.10	)	$	(0.09	)	$	(0.08	)
Effect on earnings per share—diluted	$	(0.10	)	$	(0.09	)	$	(0.07	)

Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions [Table Text Block]

	Year Ended December 31,
	2010			2011	2012
Expected life (years)	5.0			0.0	5.0
Expected volatility	85.5		%	—	85.2		%
Expected dividend yield	—		%	—	—		%
Risk-free interest rate	2.1		%	—	0.8		%
Weighted average fair value per option	$	5.07		—	$	7.88

Schedule of Share-based Compensation, Stock Options, Activity [Table Text Block]

A summary of the Company’s stock option activity with respect to the years ended December 31, 2010, 2011 and 2012 follows:

	Shares		Weighted Average Exercise Price Per Share		Weighted Average Remaining Contractual Term (years)	Aggregate Intrinsic Value
Outstanding at December 31, 2009	2,188		$	19.75
Granted	10		7.47
Exercised	(22	)	5.20
Expired	(225	)	25.86
Forfeited	(1	)	14.46
Outstanding at December 31, 2010	1,950		19.14
Granted	—		—
Exercised	(7	)	10.27
Expired	(515	)	32.35
Forfeited	—		—
Outstanding at December 31, 2011	1,428		14.42
Granted	195		11.90
Exercised	(6	)	10.16
Expired	(130	)	14.00
Forfeited	—		—
Outstanding at December 31, 2012	1,487		$	14.15	3.7	$	3,122
Vested or expected to vest at December 31, 2012	1,456		$	14.21	3.6	$	3,058
Exercisable at December 31, 2012	1,211		$	15.00	2.5	$	2,289