Benefit Plans (Details 2) (USD $)	12 Months Ended									12 Months Ended					0 Months Ended		0 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2013 Stock option	Dec. 31, 2012 Stock option	Dec. 31, 2011 Stock option	Dec. 31, 2016 Stock option	Dec. 31, 2015 Stock option	Dec. 31, 2014 Stock option	Dec. 31, 2013 Stock option Minimum	Dec. 31, 2011 Stock option Minimum	Dec. 31, 2013 Stock option Maximum	Dec. 31, 2011 Stock option Maximum	Apr. 27, 2000 2000 Stock Incentive Plan	Feb. 25, 2004 2004 Long-Term Incentive Plan	Dec. 31, 2013 2004 Long-Term Incentive Plan	May 30, 2012 2012 Plan	Dec. 31, 2013 2012 Plan
Share based plans
Shares authorized														975,000		525,500		620,000
Term of plan															10 years		10 years
Vesting percentage per year															33.30%		33.30%
Shares
Options outstanding at the beginning of the year (in shares)				672,334	568,500
Granted (in shares)				202,000	190,000
Exercised (in shares)				(57,164)	(60,662)
Forfeited and expired (in shares)				(3,500)	(25,504)
Options outstanding at the end of the year (in shares)				813,670	672,334	568,500
Options exercisable at the end of the year (in shares)				470,687	449,435
Weighted average exercise price per share
Options outstanding at the beginning of the year (in dollars per share)				$ 8.34	$ 8.34
Granted (in dollars per share)				$ 10.64	$ 7.87
Exercised (in dollars per share)				$ 9.16	$ 6.33
Forfeited and expired (in dollars per share)				$ 5.91	$ 9.72
Options outstanding at the end of the year (in dollars per share)				$ 8.86	$ 8.34	$ 8.34
Weighted average remaining contractual life
Weighted average remaining contractual life of options outstanding at end of year				6 years	5 years 7 months 6 days
Additional disclosure
Aggregate intrinsic value (in dollars)				$ 5,600,000	$ 1,500,000	$ 184,000
Aggregate intrinsic value of vested options				3,400,000	695,000	180,000
Compensation expense (in dollars)	943,000	177,000	208,000	943,000	177,000	208,000
Unrecognized compensation expense (in dollars)							$ 9,000	$ 232,000	$ 56,000
Fair value assumptions:
Expected volatility (as a percent)					23.14%					22.20%	16.49%	25.82%	38.47%
Expected term				10 years	10 years	10 years
Expected dividends (as a percent)				0.00%	0.00%	0.00%
Risk free rate (as a percent)					1.57%					1.78%	1.92%	2.67%	3.50%
Weighted-average grant date fair value (in dollars per share)					$ 7.87					$ 3.93	$ 1.80	$ 5.87	$ 3.47