Accounting Pronouncements (Details) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Current assets	$ (321,204)	$ (245,826)	$ (275,898)
Accounting Standards Update 2015-17
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Long-term assets		22,616	18,709
Current assets		$ 22,616	$ 18,709