Revision of Previously Reported Financial Information Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income	$ 167,304	$ 53,893	$ 133,240
Scenario, Previously Reported [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income		59,607	133,887
Scenario, Adjustment [Member]
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Net income		(5,714)	$ (647)
Cumulative Adjustment Equity in Earnings		$ 8,000