Summary of Significant Accounting Policies - Deferred Financing Costs (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Mar. 31, 2016	Dec. 31, 2015
New Accounting Pronouncements
Prepaid expenses and other current assets	$ 1,001		$ 772
Prepaid Expenses and Other Current Assets | Accounting Standards Update 2015-03 | Proforma Adjustment
New Accounting Pronouncements
Prepaid expenses and other current assets		$ (32)
Notes Payable | Accounting Standards Update 2015-03 | Proforma Adjustment
New Accounting Pronouncements
Other non-current assets		(22)
Notes Payable, Noncurrent | Accounting Standards Update 2015-03 | Proforma Adjustment
New Accounting Pronouncements
Other non-current assets		$ (22)