Other Income, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Other Income and Expenses [Abstract]
MSR income, net	$ 431	$ 1,967	$ 2,342	$ 4,797
Risk share income	905	907	2,351	2,706
FHLBC capital stock dividend	541	460	1,623	1,271
Equity investment income	557	119	552	119
5 Arches loan administration fee income	1,344	0	3,298	0
Amortization of intangible assets	(1,897)	0	(4,429)	0
Gain on re-measurement of investment in 5 Arches	0	0	2,441	0
Other	(56)	0	(359)	0
Other Income, Net	$ 1,825	$ 3,453	$ 7,819	$ 8,893