Income Taxes from Continuing Operations - The Geographical Allocation of the Company's Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
The Geographical Allocation of the Company's Income [Abstract]
Pre-tax income from continuing U.S. operations	$ 241,665	$ 33,320	$ 86,382
Pre-tax loss from continuing foreign operations	(9,509)	(7,978)	(3,487)
Total pre-tax income from continuing operations	$ 232,156	$ 25,342	$ 82,895