Commitments and Contingencies - Contingencies (Details) $ in Thousands	1 Months Ended	3 Months Ended
	Jan. 31, 2012	Jun. 30, 2016 USD ($) Company
Commitments and Contingencies Disclosure [Abstract]
Companies named as Potentially Responsible Parties (more than) | Company		100
Payments for OPOG's legal expenses and remediation costs | $		$ 62
Percent of contribution to the total waste	0.50%