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Shareholders' Equity, Stock Plans and Preferred Stock (Restricted Stock and Restricted Stock Units Activity) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2012
Restricted Stock Units (RSUs)
 
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Outstanding at beginning of period (shares) 41
Granted (shares) 86
Dividend Equivalents (shares) 3
Vested (shares) (33)
Cancelled (shares) (3)
Outstanding at beginning of period (shares) 94
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]  
Wieghted-Average Grant Date Fair Value, Outstanding at beginning of period $ 6.57
Weighted-average fair value of grants $ 5.87
Wieghted Average Grant Date Fair Value, Dividend Equivalents $ 5.56
Weighted Average Grant Date Fair Value, Vested $ 6.31
Weighted-Average Grant Date Fair Value, Cancelled $ 6.30
Weighted-Average Grant Date Fair Value, Outstanding at end of period $ 6.00
Employee Stock Purchase Plan
 
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Outstanding at beginning of period (shares) 53
Granted (shares) 27
Dividend Equivalents (shares) 2
Vested (shares) (30)
Cancelled (shares) 0
Outstanding at beginning of period (shares) 52
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]  
Wieghted-Average Grant Date Fair Value, Outstanding at beginning of period $ 6.68
Weighted-average fair value of grants $ 5.80
Wieghted Average Grant Date Fair Value, Dividend Equivalents $ 5.55
Weighted Average Grant Date Fair Value, Vested $ 6.57
Weighted-Average Grant Date Fair Value, Cancelled $ 0.00
Weighted-Average Grant Date Fair Value, Outstanding at end of period $ 6.24