Low Income Housing Tax Credit Partnerships (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Affordable Housing Tax Credit Investments, Unfunded Commitment [Abstract]
2019	$ 25,423
2020	5,310
2021	79
2022	55
2023	55
Thereafter	1,754
Total Unfunded Commitments	32,676
Effective Yield Method
Tax credits and other tax benefits recognized	2,938	$ 2,930
Amortization Expense in Provision for Income Taxes	2,147	1,891
Proportional Amortization Method
Tax credits and other tax benefits recognized	1,523	753
Amortization Expense in Provision for Income Taxes	1,318	645
Net affordable housing tax credit investments and related unfunded commitments	92,900		$ 76,300
Write down from impairment of LIHTC Investments	$ 0	$ 0