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Regulatory & Capital Matters (Details) - USD ($)	1 Months Ended	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Regulatory & Capital Matters
Tier 1 capital leverage ratio (as a percent)	10.57%	10.57%		11.93%
Risk-based capital ratio (as a percent)	13.09%	13.09%		14.53%
Payments of Dividends	$ 30,000,000
Phase out of impact of allowance for credit loss			$ 3,800,000
Allowance for credit loss Percentage annually		25.00%
Deferment of impact on rretained earnings	$ 5,200,000	$ 5,200,000
Percentage of allowance for credit loss		25.00%
Change in allowance for credit loss		$ 8,000,000
Subsidiaries [Member]
Regulatory & Capital Matters
Tier 1 capital leverage ratio (as a percent)	11.36%	11.36%		12.50%
Risk-based capital ratio (as a percent)	14.07%	14.07%		15.23%
Tier One leverage ratio, basis point decrease (as a percent)		1.14%
Risk-based capital ratio, basis point decrease (as a percent)		$ 1.16
Minimum [Member] | Subsidiaries [Member]
Regulatory & Capital Matters
Tier 1 capital leverage ratio (as a percent)	8.00%	8.00%
Risk-based capital ratio (as a percent)	12.00%	12.00%
Tier 1 capital leverage ratio, board-designated threshold	8.00%	8.00%
Total Capital Ratio, board-designated threshold (as a percent)	12.00%	12.00%

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Total Capital divided by risk weighted assets as defined in the regulations.

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Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests.

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Tier 1 Leverage Capital divided by average assets as defined in the regulations.

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