Debt, net - Schedule of Debt (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Dec. 31, 2016
Line of Credit Facility [Line Items]
Debt, net	$ 111,783	$ 110,358
Deferred finance costs, net	$ 1,513	$ 1,633
Senior Notes
Line of Credit Facility [Line Items]
Interest rate percentage	8.50%	8.50%
Debt, net	$ 5,205	$ 5,200
Debt instrument, maturity date	Jun. 01, 2022
Convertible Debt
Line of Credit Facility [Line Items]
Debt, net	$ 105,787	104,673
Other indebtedness
Line of Credit Facility [Line Items]
Debt, net	$ 791	$ 485
Convertible Debt
Line of Credit Facility [Line Items]
Interest rate percentage	3.75%	3.75%
Debt instrument, maturity date	Mar. 01, 2020
Minimum | Other indebtedness
Line of Credit Facility [Line Items]
Interest rate percentage	5.00%
Maximum | Other indebtedness
Line of Credit Facility [Line Items]
Interest rate percentage	5.50%