Income Taxes Income Tax Expense (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Current tax expense/(benefit)
Federal									$ 2,247	$ 0	$ 0
State and local									573	241	(133)
Foreign									341	188	569
Total									3,161	429	436
Deferred tax expense/(benefit)
Federal									(99,284)	0	8
State and local									(28,825)	0	2
Foreign									4	28	2
Total									(128,105)	28	12
Total Tax expense/(benefit)	$ (125,210)	$ 141	$ 46	$ 79	$ 169	$ (46)	$ 158	$ 176	$ (124,944)	$ 457	$ 448