Annual report pursuant to Section 13 and 15(d)

Stock Options, Stock Grants and New Stock (Stock Award Activity) (Details)

v3.8.0.1
Stock Options, Stock Grants and New Stock (Stock Award Activity) (Details) - Stock Awards [Member] - $ / shares
12 Months Ended
Feb. 08, 2017
May 05, 2016
Feb. 19, 2016
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
2005 Stock Awards Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]            
Outstanding, beginning of the year (shares)       121,302 51,440 66,403
Vested (shares)       (34,322) (21,133) (17,903)
Forfeited or expired (shares)         1,260 60
Outstanding, end of the year (shares)       131,667 121,302 51,440
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]            
Outstanding, beginning of the year, weighted average grant date fair value (dollars per share)       $ 10.03 $ 15.57 $ 15.00
Vested, weighted average grant date fair value (dollars per share)       10.45 13.12 13.86
Forfeited or expired, weighted average grant date fair value (dollars per share)         17.73 13.34
Outstanding, end of the year, weighted average grant date fair value (dollars per share)       $ 10.69 $ 10.03 $ 15.57
2015 Stock Awards Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]            
Granted (shares) 44,687 42,193 50,062      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]            
Granted, weighted average grant date fair value (dollars per share) $ 12.30 $ 8.05 $ 7.51      
October 16, 2014 [Member] | 2005 Stock Awards Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]            
Granted (shares)           3,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]            
Granted, weighted average grant date fair value (dollars per share)           $ 17.95
November 21, 2014 [Member] | 2005 Stock Awards Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]            
Granted (shares)           42,193
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]            
Granted, weighted average grant date fair value (dollars per share)           $ 8.05
January 5, 2015 [Member] | 2005 Stock Awards Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]            
Granted (shares)         50,062  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]            
Granted, weighted average grant date fair value (dollars per share)         $ 7.51  
February 19, 2016 [Member] | 2015 Stock Awards Plan [Member]            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]            
Granted (shares)       44,687    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]            
Granted, weighted average grant date fair value (dollars per share)       $ 12.30