Tax Credit Investments - Balance Sheet Disclosures (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Other Assets:
Other tax credit investments, net		$ 68,100
Other Assets
Other Assets:
Affordable housing tax credit investments, net	$ 26,352	36,961
Other tax credit investments, net	50,174	68,052
Total tax credit investments, net	76,526	105,013
Other Liabilities
Other Liabilities:
Unfunded affordable housing tax credit commitments	1,556	4,520
Unfunded other tax credit commitments	4,911	8,756
Total unfunded tax credit commitments	$ 6,467	$ 13,276