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Share-Based Compensation and Employee Ownership Plans SARs (Details)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 05, 2016
Dec. 31, 2016
USD ($)
$ / shares
shares
Dec. 31, 2015
USD ($)
$ / shares
shares
Dec. 31, 2014
USD ($)
$ / shares
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stockholders' Equity Note, Stock Split, Conversion Ratio 0.25      
Aggregate Intrinsic Value        
Closing stock price, in dollars per share   $ 15.50 $ 15.32  
Stock Appreciation Rights        
Aggregate Intrinsic Value        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Exercisable, Weighted remaining contractual term   0    
Equity Plans        
Aggregate Intrinsic Value        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | $ [1]   $ 0    
Equity Plans | Stock Appreciation Rights        
Shares Subject to Option        
Balance outstanding, beginning of period, shares | shares [2]   100,000 100,000  
Granted, shares | shares [2]   0 0  
Acquired, shares | shares [2]   0 0  
Expired, shares | shares [2]   0 0  
Balance outstanding, end of period, shares | shares [2]   100,000 100,000 100,000
Balance exercisable, shares | shares [2]   0    
Weighted Average Exercise Price/Share        
Balance outstanding, beginning of period, in dollars per share [2]   $ 11.60 $ 11.60  
Granted, in dollars per share [2]   0.00 0.00  
Acquired, in dollars per share [2]   0.00 0.00  
Expired, in dollars per share [2]   0.00 0.00  
Balance outstanding, end of period, in dollars per share [2]   $ 11.60 $ 11.60 $ 11.60
Weighted Average Remaining Term Outstanding   1 year 2 months 16 days 2 years 2 months 16 days 3 years 2 months 16 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Aggregate Intrinsic Value, Outstanding | $ [3]   $ 435 $ 558  
Aggregate Intrinsic Value        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | $ [3]       $ 913
Unrecognized compensation expense | $   $ 100 $ 100  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Exercisable, Weighted Average Grant Date Fair Value [2]   $ 0.00    
[1] Based on the Company's closing stock price of $15.50 on December 31, 2016 and $15.32 on December 31, 2015.
[2] Share and per share amounts have been retroactively updated to reflect the one-for-four reverse stock split effective as of December 5, 2016.
[3] Based on the Company's closing stock price of $15.50 on December 31, 2016 and $15.32 on December 31, 2015.