Employee Benefit Plans (Details 1) - Officer and Employee Plans [Member] - $ / shares	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 10.57	$ 10.62	$ 10.20
Number Outstanding (in shares)	717,524	817,414	483,629
Options Outstanding, Weighted Average Remaining Life	2 years 3 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 10.57
Options, Number Exercisable (in shares)	669,554
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 10.25
6.20 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 6.20
Number Outstanding (in shares)	750
Options Outstanding, Weighted Average Remaining Life	4 years 3 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 6.20
Options, Number Exercisable (in shares)	750
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 6.20
6.60 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 6.60
Number Outstanding (in shares)	47,750
Options Outstanding, Weighted Average Remaining Life	5 years 2 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 6.60
Options, Number Exercisable (in shares)	47,750
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 6.60
6.80 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 6.80
Number Outstanding (in shares)	24,375
Options Outstanding, Weighted Average Remaining Life	4 years 2 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 6.80
Options, Number Exercisable (in shares)	24,375
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 6.80
9.48 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 9.48
Number Outstanding (in shares)	42,625
Options Outstanding, Weighted Average Remaining Life	6 years 2 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 9.48
Options, Number Exercisable (in shares)	42,625
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 9.48
9.52 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 9.52
Number Outstanding (in shares)	380,100
Options Outstanding, Weighted Average Remaining Life	2 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 9.52
Options, Number Exercisable (in shares)	380,100
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 9.52
9.60 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 9.60
Number Outstanding (in shares)	52,875
Options Outstanding, Weighted Average Remaining Life	7 years 2 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 9.60
Options, Number Exercisable (in shares)	52,875
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 9.60
10.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 10.00
Number Outstanding (in shares)	1,250
Options Outstanding, Weighted Average Remaining Life	6 years 7 months 6 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 10.00
Options, Number Exercisable (in shares)	1,250
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 10.00
10.48 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 10.48
Number Outstanding (in shares)	76,271
Options Outstanding, Weighted Average Remaining Life	3 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 10.48
Options, Number Exercisable (in shares)	76,271
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 10.48
11.67 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 11.67
Number Outstanding (in shares)	3,250
Options Outstanding, Weighted Average Remaining Life	4 years 1 month 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 11.67
Options, Number Exercisable (in shares)	3,250
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 11.67
14.40 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 14.40
Number Outstanding (in shares)	18,555
Options Outstanding, Weighted Average Remaining Life	2 years 2 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 14.40
Options, Number Exercisable (in shares)	18,555
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 14.40
15.05 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 15.05
Number Outstanding (in shares)	52,074
Options Outstanding, Weighted Average Remaining Life	8 years 9 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 15.05
Options, Number Exercisable (in shares)	4,104
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 15.05
31.96 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 31.96
Number Outstanding (in shares)	14,166
Options Outstanding, Weighted Average Remaining Life	1 year 2 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 31.96
Options, Number Exercisable (in shares)	14,166
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 31.96
60.80 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 60.80
Number Outstanding (in shares)	688
Options Outstanding, Weighted Average Remaining Life	3 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 60.80
Options, Number Exercisable (in shares)	688
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 60.80
61.00 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Exercise Prices (in dollars per share)	$ 61.00
Number Outstanding (in shares)	2,795
Options Outstanding, Weighted Average Remaining Life	2 months 18 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share)	$ 61.00
Options, Number Exercisable (in shares)	2,795
Options Exercisable, Weighted Average Exercise Price (in dollars per share)	$ 61.00