Stockholders' Equity (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Nov. 30, 2015	Feb. 28, 2015	Dec. 31, 2013	Dec. 31, 2012
Class of Stock [Line Items]
Authorized amount for share repurchase program	$ 40,000,000.0		$ 20,000,000	$ 20,000,000
Options outstanding (in shares)	288,383	503,134			1,208,824	1,216,809
Stock Options
Class of Stock [Line Items]
Shares repurchased during the period (in shares)	163,500	419,643
Shares repurchased during the period	$ 3,000,000	$ 9,800,000
Stock repurchased during period, net cash value	$ 900,000	$ 1,400,000
Restricted Stock and Restricted Stock Units
Class of Stock [Line Items]
Stock Awards - Outstanding (in shares)	1,275,707	767,540			555,025	698,869
2013 Employee Plan
Class of Stock [Line Items]
Number of shares authorized for grant	2,895,000
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)	1,137,184
2009 Employee Plan
Class of Stock [Line Items]
Options outstanding (in shares)	284,006
2009 Employee Plan | Restricted Stock and Restricted Stock Units
Class of Stock [Line Items]
Stock Awards - Outstanding (in shares)	138,523
2006 Employee Plan
Class of Stock [Line Items]
Options outstanding (in shares)	4,377
2006 Employee Plan | Restricted Stock and Restricted Stock Units
Class of Stock [Line Items]
Stock Awards - Outstanding (in shares)	0
2011 Director Plan
Class of Stock [Line Items]
Number of shares authorized for grant	250,000
2011 Director Plan | Deferred Stock Units
Class of Stock [Line Items]
Stock Awards - Outstanding (in shares)	145,803
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)	1,306,199	860,761
Shares repurchased during the period	$ 24,300,000	$ 20,000,000
Average cost per share (in Dollars per share)	$ 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)	32,902	54,334
Shares repurchased during the period	$ 600,000	$ 1,200,000
Average cost per share (in Dollars per share)	$ 17.05	$ 22.62