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Share-Based Compensation (Details 1) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Certain information regarding the Company' s share-based compensation
Amortization of stock-based compensation	$ 3,830	$ 2,848	$ 2,962
Deferred tax benefits, Total	926	874	1,143
Realized tax benefits, Total	459	195	4,326
Excess tax benefits (shortfall), Total	(1,760)	195	4,099
Weighted average fair value per share, Restricted stock grants	$ 3.37
Intrinsic value of options exercised	437	507	12,055
Fair value of restricted stock vested	1,164	540	723
Cash received for strike price and tax withholdings	652	204	278
Shares acquired through cashless exercise (1)	147	70	1,314
Value of shares acquired	583	263	7,878
Stock Options [Member]
Certain information regarding the Company' s share-based compensation
Amortization of stock-based compensation	1,188	1,450	2,109
Deferred tax benefits, Total	458	559	814
Realized tax benefits, Total	168	195	4,650
Excess tax benefits (shortfall), Total	(1,618)	195	4,289
Weighted average fair value per share, Stock option grants	$ 0.87	$ 1.67	$ 1.46
Restricted Stock [Member]
Certain information regarding the Company' s share-based compensation
Amortization of stock-based compensation	2,642	1,398	853
Deferred tax benefits, Total	468	315	329
Realized tax benefits, Total	291		(324)
Excess tax benefits (shortfall), Total	$ (142)		$ (190)
Weighted average fair value per share, Restricted stock grants	$ 3.37	$ 5.61	$ 5.84

X

- Definition

The net amount of deferred income taxes and income tax credits less the tax benefit from exercise of stock options.

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Disclosure of the aggregate tax benefit realized from the exercise of stock options and the conversion of similar instruments during the annual period.

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Amount of excess tax benefit (tax deficiency) that arises when compensation cost from non-qualified equity-based compensation recognized on the entity's tax return exceeds (is less than) compensation cost from equity-based compensation recognized in financial statements. Excess tax benefit (tax deficiency) reduces (increases) net cash provided by operating activities.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The total fair value of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement.

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The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation.

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Shares acquired through cashless exercise.

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