Stockholders' Equity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Oct. 31, 2016	Aug. 31, 2016	Mar. 31, 2016	Nov. 30, 2015	Dec. 31, 2013
Class of Stock [Line Items]
Authorized amount for share repurchase program				$ 40,000,000	$ 10,000,000	$ 20,000,000	$ 20,000,000
Options outstanding (in shares)	170,253	288,383	503,134					1,208,824
Stock Options
Class of Stock [Line Items]
Shares repurchased during the period (in shares)	61,980	163,500	419,643
Shares repurchased during the period	$ 1,200,000	$ 3,000,000	$ 1,400,000
Stock repurchased during period, net cash value	$ 1,500,000	$ 900,000	$ 9,800,000
Restricted Stock and Restricted Stock Units
Class of Stock [Line Items]
Stock awards outstanding (in shares)	1,501,021	1,275,707	767,540					555,025
2016 Employee Plan
Class of Stock [Line Items]
Number of shares authorized for grant (in shares)	1,132,739
2016 Employee Plan | Stock Options
Class of Stock [Line Items]
Stock awards outstanding (in shares)	0
2016 Employee Plan | Restricted Stock and Restricted Stock Units
Class of Stock [Line Items]
Stock awards outstanding (in shares)	56,581
2013 Employee Plan | Stock Options
Class of Stock [Line Items]
Stock awards outstanding (in shares)	0
2013 Employee Plan | Restricted Stock and Restricted Stock Units
Class of Stock [Line Items]
Stock awards outstanding (in shares)	1,435,307
2009 Employee Plan
Class of Stock [Line Items]
Options outstanding (in shares)	170,253
2009 Employee Plan | Restricted Stock and Restricted Stock Units
Class of Stock [Line Items]
Stock awards outstanding (in shares)	9,133
2016 Director Plan
Class of Stock [Line Items]
Number of shares authorized for grant (in shares)	166,456
2016 Director Plan | Deferred Stock Units
Class of Stock [Line Items]
Stock awards outstanding (in shares)	2,104
2011 Director Plan | Deferred Stock Units
Class of Stock [Line Items]
Stock awards outstanding (in shares)	149,925
2006 Director Plan | Deferred Stock Units
Class of Stock [Line Items]
Stock awards outstanding (in shares)	46,841
2001 Director Plan | Deferred Stock Units
Class of Stock [Line Items]
Stock awards outstanding (in shares)	54,575
Through The Open Market Repurchase Program
Class of Stock [Line Items]
Shares repurchased during the period (in shares)	2,226,875	1,306,199	860,761
Shares repurchased during the period	$ 41,800,000	$ 24,300,000	$ 20,000,000
Average cost per share (in Dollars per share)	$ 18.76	$ 18.58	$ 23.24
In Connection with Equity Compensation Programs
Class of Stock [Line Items]
Authorized amount for share repurchase program	$ 10,000,000
Shares repurchased during the period (in shares)	61,039	32,902	54,334
Shares repurchased during the period	$ 1,200,000	$ 600,000	$ 1,200,000
Average cost per share (in Dollars per share)	$ 19.65	$ 17.05	$ 22.62