Legal Proceedings - Additional Information (Details) - Holten Settlement - USD ($) $ in Millions	1 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2010	Dec. 31, 2016
Loss Contingencies [Line Items]
Amount alleged to be payable to indirect controlling shareholder (more than)		$ 3.8
Amount payable to indirect controlling shareholder	$ 3.4
Amount to be recovered by the company through insurance	$ 1.9
Expense recognized related to litigation settlement			$ 1.5