Summary of Significant Accounting Policies - Recent Accounting Pronouncements (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Nov. 30, 2015	Apr. 30, 2015	Dec. 31, 2014
Recent Accounting Pronouncements
Prepaid expenses and other current assets	$ 1,505			$ 2,081
Deferred tax liability	1,233			987
Other assets	1,732			1,153
Long-term debt	$ 21,944			$ 22,935
Accounting Standards Update ("ASU") 2015-17 - Income Taxes: Balance Sheet Classification of Deferred Taxes | Retrospective early adoption
Recent Accounting Pronouncements
Prepaid expenses and other current assets		$ (271)
Deferred tax liability		$ 271
Accounting Standards Update ("ASU") 2015-03 - Simplifying the Presentation of Debt Issuance Costs | Retrospective early adoption
Recent Accounting Pronouncements
Other assets			$ (135)
Long-term debt			$ 135