Stockholders' Equity (Details) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2016 shares	Jun. 30, 2016 USD ($) shares
Class of Stock [Line Items]
Stock Repurchased		2,100,000
Treasury Stock, Value, Acquired, Cost Method | $		$ 58.6
Shares Paid for Tax Withholding for Share Based Compensation	24,314
2012 Repurchase Program [Member]
Class of Stock [Line Items]
Maximum number of shares authorized to be repurchased	5,000,000	5,000,000
Stock Repurchased		0