Stock-Based Compensation (Details Textual) (USD $) Share data in Thousands, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Reversed Share Based Compensation	$ 200,000	$ 500,000	$ 400,000
Withholding taxes stock-based compensation	17,000	100,000	100,000	100,000
Additional Paid In Capital Net Incremental Credit	100,000	400,000	500,000	900,000
Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Grant Date Fair Value			200,000
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options	300,000		300,000
Unallocated Share Based Compensation Expense	1,100,000		1,100,000
Common Stock, Dividends, Per Share, Cash Paid	$ 1.60	$ 0	$ 1.60	$ 0
Allocated Share-based Compensation Expense			4,000
Share-Based Compensation Arrangement By Share-Based Payment Award, Options, Grants In Period, Gross			156
Share-based Compensation, Total			$ (366,000)	$ 982,000
Employee Stock Option [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			16 months
Nonvested Shares [Member]
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition			16 months