Annual report pursuant to Section 13 and 15(d)

Stock Based Compensation (Details 1)

v3.8.0.1
Stock Based Compensation (Details 1) - Employee Stock Option [Member] - $ / shares
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Shares - Nonvested, Beginning Balance (in shares) 28,465 19,725
Shares - Granted (in shares) 4,575 8,740
Shares - Vested (in shares) (1,625) 0
Shares - Forfeited (in shares) (725) 0
Shares - Nonvested, Ending Balance (in shares) 30,690 28,465
Weighted Average Exercise Price - Nonvested, Beginning Balance (in dollars per share) $ 26.67 $ 25.15
Weighted Average Exercise Price - Granted (in dollars per share) 39.00 30.1
Weighted Average Exercise Price - Vested (in dollars per share) 25.81 0
Weighted Average Exercise Price - Forfeited (in dollars per share) 28.62 0
Weighted Average Exercise Price - Nonvested, Ending Balance (in dollars per share) $ 28.51 $ 26.67