Significant Accounting Policies - Accounting Pronouncements (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Dec. 31, 2015
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred tax assets, noncurrent	$ 24,509	$ 26,449
Accounting Standards Update 2015 17 | Adjustments for New Accounting Principle, Early Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred tax assets, current		(6,400)
Deferred tax assets, noncurrent		$ 6,400