Payables and Accrued Liabilities - Additional information (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Dec. 31, 2015	Jun. 30, 2016	Dec. 31, 2016
Restructuring Cost and Reserve [Line Items]
Costs incurred			$ 25,758
Exit Originations Segment Retail Channel [Member]
Restructuring Cost and Reserve [Line Items]
Costs incurred	$ 1,200	$ 2,000
2016 Actions [Member]
Restructuring Cost and Reserve [Line Items]
Costs incurred			23,546
Additional costs expected to be incurred			$ 300