CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Cash pledged to creditors	$ 773,361	$ 52,599
Mortgage loans held for sale, pledged to creditors	5,493,332	4,846,138
Servicing advances, net, valuation allowance	80,784	82,157
Servicing advances pledged to creditors	182,531	207,460
Mortgage servicing rights, at fair value	2,163,928	2,920,603
Furniture, fixtures, equipment and building improvements pledged to creditors	7,392	20,406
Capitalized software pledged to creditors	$ 10,606	$ 12,192
Common Stock
Common stock, shares authorized	200,000,000	200,000,000
Common stock, par value (in dollars per share)	$ 0.0001	$ 0.0001
Common stock, shares issued	79,190,245	78,515,047
Common stock, shares outstanding	79,190,245	78,515,047