Stock Compensation - Summary of Stock Option Activity for the Period (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options Granted (in shares)	208,200	209,500	323,400
Issuances under option plans, shares	239,508	228,064	503,321
Outstanding at December 31, 2014	1,512,756	1,574,572
Options Exercised, Shares (in shares)	(239,508)	(228,064)	(503,321)
Cancelled or forfeited (in shares)	(71,567)	(43,252)	(164,528)
Outstanding at December 31, 2015	1,409,881	1,512,756	1,574,572
Exercisable at December 31, 2015	1,231,544	1,066,219	1,057,694
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Options Granted, Average Exercise Price (in dollars per share)	$ 18.67	$ 20.93	$ 14.77
Options Exercised, Average Exercise Price (in dollars per share)	11.57
Outstanding, Average Price (in dollars per share)	13.24
Cancelled or forfeited, average exercise price (in dollars per share)	17.30
Outstanding, Average Price (in dollars per share)	14.12	13.24
Exercisable, Average Exercise Price (in dollars per share)	$ 13.47	11.58	11.48
Outstanding, Weighted Average Life	5 years 5 months 19 days
Exercisable, Weighted Average Life	5 years 7 days
Aggregate Intrinsic Value December 31, 2015	$ 1,904
Aggregate Intrinsic Value, exercisable	$ 1,904
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Options Exercised, Average Exercise Price (in dollars per share)	$ 9.97	9.97	8.00
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Abstract]
Options Exercised, Average Exercise Price (in dollars per share)	$ 17.02	$ 17.02	$ 18.62