Commitments and Contingencies - Repurchase Reserve Activity (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Continuing operations repurchase reserve activity
Beginning balance	$ 8,969	$ 7,657
Provision for repurchases	5,395	5,487
Settlements	(1,780)	(4,175)
Total repurchase reserve	$ 12,584	$ 8,969