Stock-Based Compensation (Details 1)	12 Months Ended
	Dec. 31, 2015 $ / shares shares
Summary of stock option plan
Outstanding at beginning of year, Shares | shares	85,629
Exercised, Shares | shares	9,329
Forfeited, Shares | shares	2,293
Outstanding at end of year, Shares | shares	74,007
Options exercisable at period end, Shares | shares	62,082
Outstanding at beginning of year, Weighted Average Exercise Price | $ / shares	$ 6.81
Exercised, Weighted Average Exercise Price | $ / shares	3.69
Forfeited, Weighted Average Exercise Price | $ / shares	19.49
Outstanding at end of period, Weighted Average Exercise Price | $ / shares	6.66
Options exercisable at year end, Weighted Average Exercise Price | $ / shares	$ 7.07