Employee Benefit Plans (Details 1) - Officer and Employee Plans [Member] - $ / shares	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Exercise Prices	$ 10.62	$ 10.20	$ 10.21
Number Outstanding	817,414	483,629	487,431
Options Outstanding, Weighted Average Remaining Life	3 years 4 months 24 days
Options Outstanding, Weighted Average Exercise Price	$ 10.62
Options, Number Exercisable	763,675
Options Exercisable, Weighted Average Exercise Price	$ 10.31
Exercise Price One [Member]
Exercise Prices	$ 4.08
Number Outstanding	1,250
Options Outstanding, Weighted Average Remaining Life	5 years 9 months 18 days
Options Outstanding, Weighted Average Exercise Price	$ 4.08
Options, Number Exercisable	1,250
Options Exercisable, Weighted Average Exercise Price	$ 4.08
Exercise Price Two [Member]
Exercise Prices	$ 4.40
Number Outstanding	1,250
Options Outstanding, Weighted Average Remaining Life	5 years 7 months 6 days
Options Outstanding, Weighted Average Exercise Price	$ 4.40
Options, Number Exercisable	1,250
Options Exercisable, Weighted Average Exercise Price	$ 4.40
Exercise Price Three [Member]
Exercise Prices	$ 6.20
Number Outstanding	750
Options Outstanding, Weighted Average Remaining Life	5 years 3 months 18 days
Options Outstanding, Weighted Average Exercise Price	$ 6.20
Options, Number Exercisable	750
Options Exercisable, Weighted Average Exercise Price	$ 6.20
Exercise Price Four [Member]
Exercise Prices	$ 6.60
Number Outstanding	62,250
Options Outstanding, Weighted Average Remaining Life	6 years 2 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 6.60
Options, Number Exercisable	62,250
Options Exercisable, Weighted Average Exercise Price	$ 6.60
Exercise Price Five [Member]
Exercise Prices	$ 6.80
Number Outstanding	33,875
Options Outstanding, Weighted Average Remaining Life	5 years 2 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 6.80
Options, Number Exercisable	33,875
Options Exercisable, Weighted Average Exercise Price	$ 6.80
Exercise Price Six [Member]
Exercise Prices	$ 9.48
Number Outstanding	57,250
Options Outstanding, Weighted Average Remaining Life	7 years 2 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 9.48
Options, Number Exercisable	57,250
Options Exercisable, Weighted Average Exercise Price	$ 9.48
Exercise Price Seven [Member]
Exercise Prices	$ 9.52
Number Outstanding	407,400
Options Outstanding, Weighted Average Remaining Life	1 year 2 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 9.52
Options, Number Exercisable	407,400
Options Exercisable, Weighted Average Exercise Price	$ 9.52
Exercise Price Eight [Member]
Exercise Prices	$ 9.60
Number Outstanding	70,000
Options Outstanding, Weighted Average Remaining Life	8 years 2 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 9.60
Options, Number Exercisable	70,000
Options Exercisable, Weighted Average Exercise Price	$ 9.60
Exercise Price Nine [Member]
Exercise Prices	$ 10.00
Number Outstanding	1,250
Options Outstanding, Weighted Average Remaining Life	7 years 7 months 6 days
Options Outstanding, Weighted Average Exercise Price	$ 10.00
Options, Number Exercisable	1,250
Options Exercisable, Weighted Average Exercise Price	$ 10.00
Exercise Price Ten [Member]
Exercise Prices	$ 10.48
Number Outstanding	79,220
Options Outstanding, Weighted Average Remaining Life	4 years 6 months
Options Outstanding, Weighted Average Exercise Price	$ 10.48
Options, Number Exercisable	79,220
Options Exercisable, Weighted Average Exercise Price	$ 10.48
Exercise Price Eleven [Member]
Exercise Prices	$ 11.67
Number Outstanding	5,250
Options Outstanding, Weighted Average Remaining Life	5 years 1 month 6 days
Options Outstanding, Weighted Average Exercise Price	$ 11.67
Options, Number Exercisable	4,200
Options Exercisable, Weighted Average Exercise Price	$ 11.67
Exercise Price Twelve [Member]
Exercise Prices	$ 14.29
Number Outstanding	1,050
Options Outstanding, Weighted Average Remaining Life	2 years 6 months
Options Outstanding, Weighted Average Exercise Price	$ 14.29
Options, Number Exercisable	1,050
Options Exercisable, Weighted Average Exercise Price	$ 14.29
Exercise Price Thirteen [Member]
Exercise Prices	$ 14.40
Number Outstanding	21,630
Options Outstanding, Weighted Average Remaining Life	3 years 2 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 14.40
Options, Number Exercisable	21,630
Options Exercisable, Weighted Average Exercise Price	$ 14.40
Exercise Price Fourteen [Member]
Exercise Prices	$ 15.05
Number Outstanding	52,689
Options Outstanding, Weighted Average Remaining Life	9 years 9 months 18 days
Options Outstanding, Weighted Average Exercise Price	$ 15.05
Options, Number Exercisable	0
Options Exercisable, Weighted Average Exercise Price	$ 15.05
Exercise Price Fifteen [Member]
Exercise Prices	$ 31.96
Number Outstanding	14,454
Options Outstanding, Weighted Average Remaining Life	2 years 2 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 31.96
Options, Number Exercisable	14,454
Options Exercisable, Weighted Average Exercise Price	$ 31.96
Exercise Price Sixteen [Member]
Exercise Prices	$ 53.00
Number Outstanding	4,200
Options Outstanding, Weighted Average Remaining Life	2 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 53.00
Options, Number Exercisable	4,200
Options Exercisable, Weighted Average Exercise Price	$ 53.00
Exercise Price Seventeen [Member]
Exercise Prices	$ 60.80
Number Outstanding	688
Options Outstanding, Weighted Average Remaining Life	1 year 3 months 18 days
Options Outstanding, Weighted Average Exercise Price	$ 60.80
Options, Number Exercisable	688
Options Exercisable, Weighted Average Exercise Price	$ 60.80
Exercise Price Eighteen [Member]
Exercise Prices	$ 61.00
Number Outstanding	2,958
Options Outstanding, Weighted Average Remaining Life	1 year 2 months 12 days
Options Outstanding, Weighted Average Exercise Price	$ 61.00
Options, Number Exercisable	2,958
Options Exercisable, Weighted Average Exercise Price	$ 61.00