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Incentive Plans (Details 1)
12 Months Ended
Dec. 31, 2015
$ / shares
shares
Restricted Stock Units [Member]  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Non-vested-Beginning of year | shares 27
Granted | shares 38
Vested | shares (27)
Cancelled/Forfeited | shares (5)
Non-vested-End of year | shares 33
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Market Value at Grant Date [Roll Forward]  
Non-vested-Beginning of year | $ / shares $ 11.93
Granted | $ / shares 9.14
Vested | $ / shares 11.93
Cancelled/Forfeited | $ / shares 9.14
Non-vested-End of year | $ / shares $ 9.14
Restricted Stock Awards [Member]  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]  
Non-vested-Beginning of year | shares 201
Granted | shares 104
Vested | shares (19)
Cancelled/Forfeited | shares (20)
Expired | shares (32)
Non-vested-End of year | shares 234
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Market Value at Grant Date [Roll Forward]  
Non-vested-Beginning of year | $ / shares $ 11.43
Granted | $ / shares 5.76
Vested | $ / shares 11.59
Cancelled/Forfeited | $ / shares 11.97
Expired | $ / shares 12.45
Non-vested-End of year | $ / shares $ 9.57