Commitments and Contingencies - Holten Settlement (Details) - Holten Settlement	1 Months Ended
	Mar. 31, 2016 USD ($)
Loss Contingencies [Line Items]
Amount alleged to be payable to indirect controlling shareholder (more than)	$ 3,800,000.0
Amount payable to indirect controlling shareholder	3,400,000
Amount to be recovered by the company through insurance	1,900,000
Expense recognized related to litigation settlement	$ 1,500,000