Goodwill and Intangible Assets Amortization (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Aggregate Amortization Expense [Abstract]
Amortization expense	$ 5,346	$ 5,837
Summary of the estimated annual amortization expense
2015	10,688
2016	10,688
2017	8,665
2018	4,548
2019	$ 4,548