Goodwill and Intangible Assets Amortization (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Summary of the estimated annual amortization expense
Amortization expense	$ 6,126	$ 10,647	$ 11,630
2016	4,101
2017	0
2018	0
2019	0
2020	$ 0