Annual report pursuant to Section 13 and 15(d)

Stock Based Compensation (Details)

v3.8.0.1
Stock Based Compensation (Details) - USD ($)
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares - Exercised (in shares) (500)  
Weighted-Average Exercise Price - Exercised (in dollars per share) $ 28.50  
Employee Stock Option [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares - Outstanding Begining Balance (in shares) 500 750
Shares - Granted (in shares) 0 0
Shares - Exercised (in shares) (500) 0
Shares - Forfeited or expired (in shares) 0 (250)
Shares - Outstanding Ending Balance (in shares) 0 500
Shares - Vested or expected to vest (in shares) 0 500
Shares - Exercisable (in shares) 0 500
Weighted-Average Exercise Price - Outstanding at Begining of period (in dollars per share) $ 28.50 $ 28.50
Weighted-Average Exercise Price - Granted (in dollars per shares) 0 0
Weighted-Average Exercise Price - Exercised (in dollars per share) 28.50 0
Weighted-Average Exercise Price - Forfeited or expired (in dollars per share) 0 28.50
Weighted-Average Exercise Price - Outstanding at end of period (in dollars per share) 0 28.50
Weighted Average Exercise Price - Vested or expected to vest (in dollars per share) 0 28.50
Weighted-Average Exercise Price - Exercisable at end of period (in dollars per share) $ 0 $ 28.50
Weighted-Average Remaining Contractual Term - Outstanding at end of period (in years) 0 years 1 year 2 months 12 days
Weighted Remaining Contractual Term - Vested or expected to vest (in years) 0 years 1 year 2 months 12 days
Weighted-Average Remaining Contractual Term - Exercisable at end of period (in years) 0 years 1 year 2 months 12 days
Aggregate Intrinsic Value - Outstanding at end of period (in dollars) $ 0 $ 5,175
Aggregate Intrinsic Value -Vested or expected to vest (in dollars) 0 5,175
Aggregate Intrinsic Value - Exercisable at end of period (in dollars) $ 0 $ 5,175