Securities - Additional Information (Details) - USD ($)	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Investments Debt And Equity Securities [Abstract]
Fair value of securities purchased			$ 2,300,000	$ 15,600,000
Proceeds from calls and principal repayments			6,300,000	4,100,000
Fair value of securities sold			0	13,900,000
Impairment losses on securities	$ 0	$ 0	0	$ 0
Gross unrealized losses	0		0		$ 19,160,000
Carrying value of pledged securities	$ 16,900,000		$ 16,900,000		$ 16,600,000

The fair value of securities purchased during the period.

No definition available.

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- Definition

Fair value of securities sold.

+ References

No definition available.

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- Definition

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in unrealized loss position without allowance for credit loss.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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- References

No definition available.

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- Definition

Amount of other-than-temporary impairment (OTTI) on investment in debt security, recognized in earnings.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

The sum of the fair values, as of the date of each statement of financial position presented, of securities that are restricted as collateral for the payment of related debt obligations, primarily secured borrowings and repurchase agreements, and that are reclassified and separately reported in the statement of financial position because the transferee has the right by contract or custom to sell or re-pledge them.

+ References

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- Definition

Amount of cash inflow from maturity, prepayment and call of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

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