Qualified Affordable Housing Project Investments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Schedule of Equity Method Investments [Line Items]
Original Investment Value	$ 51,181	$ 16,181
Current Recorded Investment	39,407	11,582
Unfunded Liability Obligation	13,382	1,300
Tax Credits and Tax Deductions	8,984	2,514
Amortization of Investments	4,574	1,599
Net Income Tax Benefit	$ (5,207)	(2,135)
Period of tax credits	10 years
WNC Institutional Tax Credit Fund X, CA Series 11 L.P.
Schedule of Equity Method Investments [Line Items]
Original Investment Value	$ 5,000	5,000
Current Recorded Investment	2,250	2,750
Unfunded Liability Obligation	0	85
Tax Credits and Tax Deductions	715	455
Amortization of Investments	500	500
Net Income Tax Benefit	(675)	(663)
WNC Institutional Tax Credit Fund X, CA Series 12, L.P.
Schedule of Equity Method Investments [Line Items]
Original Investment Value	5,000	5,000
Current Recorded Investment	2,750	3,250
Unfunded Liability Obligation	136	288
Tax Credits and Tax Deductions	786	482
Amortization of Investments	500	500
Net Income Tax Benefit	(703)	(690)
Sycamore Court
Schedule of Equity Method Investments [Line Items]
Original Investment Value	6,181	6,181
Current Recorded Investment	4,580	5,582
Unfunded Liability Obligation	927	927
Tax Credits and Tax Deductions	1,141	1,577
Amortization of Investments	1,003	599
Net Income Tax Benefit	(766)	$ (782)
R4 CA Housing
Schedule of Equity Method Investments [Line Items]
Original Investment Value	15,000
Current Recorded Investment	13,426
Unfunded Liability Obligation	9,405
Tax Credits and Tax Deductions	4,721
Amortization of Investments	1,574
Net Income Tax Benefit	(1,950)
Cypress Cove
Schedule of Equity Method Investments [Line Items]
Original Investment Value	20,000
Current Recorded Investment	16,401
Unfunded Liability Obligation	2,914
Tax Credits and Tax Deductions	1,621
Amortization of Investments	997
Net Income Tax Benefit	$ (1,113)