Low Income Housing Tax Credit Partnerships (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Affordable Housing Tax Credit Investments, Unfunded Commitment [Abstract]
2020	$ 6,295		$ 6,295
2021	5,310		5,310
2022	79		79
2023	55		55
2024	55		55
Thereafter	1,754		1,754
Total Unfunded Commitments	13,548		13,548
Effective Yield Method
Tax credits and other tax benefits recognized	2,938	$ 2,930	5,876	$ 5,859
Amortization Expense in Provision for Income Taxes	2,147	1,891	4,293	3,783
Proportional Amortization Method
Tax credits and other tax benefits recognized	1,523	753	3,046	1,507
Amortization Expense in Provision for Income Taxes	1,318	$ 645	2,637	1,289
Net affordable housing tax credit investments and related unfunded commitments	$ 89,400		89,400		$ 76,300
Write down from impairment of LIHTC Investments			$ 0	$ 0