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Stock-Based Compensation (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 6 Months Ended 0 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Apr. 04, 2013
Management [Member]
Restricted Stock [Member]
Apr. 04, 2013
Management [Member]
Stock Appreciation Rights (SARs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value         $ 5.44 $ 1.97
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period         143,695 396,760
Risk-free Interest Rate     0.33% 0.31%    
Expected life (in years)     3 years 6 months 3 years 6 months    
Expected volatility     49.80% 57.62%    
Dividend Yield     0.00% 0.00%    
Stock-based Compensation Expense $ 700 $ 600 $ 1,073 $ 1,036