Stockholders' Equity - Narrative (Details) (USD $)	1 Months Ended	9 Months Ended
	Feb. 28, 2013	Sep. 30, 2014
Equity, Class of Treasury Stock [Line Items]
Treasury Stock Reissued (shares)		331,350
Treasury Stock Reissued		$ 12,000,000
February 2013 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Authorized Amount	100,000,000
Stock Repurchased During Period, Shares		367,256
Stock Repurchased During Period, Value		30,000,000
Cumulative Amount of Shares Repurchased		779,278
Cumulative payments for repurchase of common stock		59,700,000
Remaining authorized stock repurchases		$ 40,300,000