Investments in Limited Partnerships - Investments in Community Development Entities and Investments in Limited Partnerships for Federal Rehabilitation/Historic Tax Credits (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Investments in Limited Partnerships
Investments in community development entities net carrying amount	$ 465,000	$ 481,000
Investments in limited partnerships for federal or historic tax credits	629,000	642,000
Usage of investment in community development entities federal new market tax credits	100,000	100,000	$ 100,000
Actual amortization of investment in community development entities	$ 83,000	$ 86,000	$ 80,000
Credit allowance period	7 years
Community development entities, minimum period before redemption	7 years
Credit allowance period for federal rehabilitation/historic tax credits	5 years
For the First three years
Investments in Limited Partnerships
Percentage of investments on credit allowance period	5.00%
For the next four years
Investments in Limited Partnerships
Percentage of investments on credit allowance period	6.00%