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No definition available.

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of expected credit loss for credit exposure on off-balance-sheet commitment, including but not limited to, loan commitment, standby letter of credit, financial guarantee not accounted for as insurance. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of expense (reversal of expense) for expected credit loss for off-balance sheet credit exposure. Excludes off-balance sheet credit exposure accounted for as insurance and instrument accounted for under derivatives and hedging.

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Commitments and Contingencies - Additional Information (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Jun. 30, 2019	Jan. 01, 2020
Concentration Risk [Line Items]
Liability for off-balance sheet credit exposures	$ 4,200,000	$ 4,200,000		$ 0
Credit loss expense, off balance sheet credit exposure	$ (1,600,000)	$ 772,000	$ 0
Credit Concentration Risk \| Loans Concentration \| Commercial real estate
Concentration Risk [Line Items]
Concentration risk, percentage		64.00%
Credit Concentration Risk \| Loans Concentration \| Agricultural Related Loan Financing Receivable
Concentration Risk [Line Items]
Concentration risk, percentage		8.00%
Credit Concentration Risk \| Investment Securities \| State and political subdivisions \| IOWA
Concentration Risk [Line Items]
Concentration risk, percentage		34.00%
Credit Concentration Risk \| Investment Securities \| State and political subdivisions \| MINNESOTA
Concentration Risk [Line Items]
Concentration risk, percentage		20.00%