Stockholders' Equity (Details) - Common Stock Repurchased (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		1 Months Ended	10 Months Ended		12 Months Ended
	May. 17, 2013	Dec. 31, 2013	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Equity [Abstract]
Common stock repurchased (in shares)	424	1,672	7,510	600
Common stock repurchased (in usd per share)	$ 47.52	$ 31.12	$ 21.25	$ 30.56
Repurchase of Common Stock (in dollars)	$ 20,259	$ 52,435	$ 159,600	$ 18,362	$ 159,600	$ 18,362	$ 72,694