Advances and Other Receivables, Net - Purchase Discount (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Servicing Advances
Balance - beginning of period	$ 169,000	$ 205,000
Addition from acquisition	0	19,000
Utilization of purchase discounts	(13,000)	68,000
Balance - end of period	156,000	156,000
Receivables from Agencies, Investors and Prior Servicers
Balance - beginning of period	48,000	48,000
Addition from acquisition	0	0
Utilization of purchase discounts	0	0
Balance - end of period	$ 48,000	$ 48,000