Fair Value Measurements - Fair value of assets measured at fair value on a recurring basis (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Securities available-for-sale:
Securities available-for-sale, at fair value	$ 298,103	$ 239,300
Equity securities, at fair value	2,324	1,869
U.S Treasuries
Securities available-for-sale:
Securities available-for-sale, at fair value	49,511	30,543
U.S. government and federal agencies
Securities available-for-sale:
Securities available-for-sale, at fair value	31,960	34,537
Corporate bonds
Securities available-for-sale:
Securities available-for-sale, at fair value	2,965	1,031
Collateralized mortgage obligations
Securities available-for-sale:
Securities available-for-sale, at fair value	37,357	39,049
Tax-exempt municipal
Securities available-for-sale:
Securities available-for-sale, at fair value	4,851	5,262
Taxable municipal
Securities available-for-sale:
Securities available-for-sale, at fair value	1,649	1,685
Mortgage-backed
Securities available-for-sale:
Securities available-for-sale, at fair value	169,810	127,193
Fair Value, Recurring
Securities available-for-sale:
Equity securities, at fair value	2,324	1,869
Total assets at fair value	300,427	241,169
Fair Value, Recurring \| U.S Treasuries
Securities available-for-sale:
Securities available-for-sale, at fair value	49,511	30,543
Fair Value, Recurring \| U.S. government and federal agencies
Securities available-for-sale:
Securities available-for-sale, at fair value	31,960	34,537
Fair Value, Recurring \| Corporate bonds
Securities available-for-sale:
Securities available-for-sale, at fair value	2,965	1,031
Fair Value, Recurring \| Collateralized mortgage obligations
Securities available-for-sale:
Securities available-for-sale, at fair value	37,357	39,049
Fair Value, Recurring \| Tax-exempt municipal
Securities available-for-sale:
Securities available-for-sale, at fair value	4,851	5,262
Fair Value, Recurring \| Taxable municipal
Securities available-for-sale:
Securities available-for-sale, at fair value	1,649	1,685
Fair Value, Recurring \| Mortgage-backed
Securities available-for-sale:
Securities available-for-sale, at fair value	169,810	127,193
Fair Value, Recurring \| Fair Value, Inputs, Level 1
Securities available-for-sale:
Equity securities, at fair value	2,324	1,869
Total assets at fair value	2,324	1,869
Fair Value, Recurring \| Fair Value, Inputs, Level 2
Securities available-for-sale:
Total assets at fair value	298,103	239,300
Fair Value, Recurring \| Fair Value, Inputs, Level 2 \| U.S Treasuries
Securities available-for-sale:
Securities available-for-sale, at fair value	49,511	30,543
Fair Value, Recurring \| Fair Value, Inputs, Level 2 \| U.S. government and federal agencies
Securities available-for-sale:
Securities available-for-sale, at fair value	31,960	34,537
Fair Value, Recurring \| Fair Value, Inputs, Level 2 \| Corporate bonds
Securities available-for-sale:
Securities available-for-sale, at fair value	2,965	1,031
Fair Value, Recurring \| Fair Value, Inputs, Level 2 \| Collateralized mortgage obligations
Securities available-for-sale:
Securities available-for-sale, at fair value	37,357	39,049
Fair Value, Recurring \| Fair Value, Inputs, Level 2 \| Tax-exempt municipal
Securities available-for-sale:
Securities available-for-sale, at fair value	4,851	5,262
Fair Value, Recurring \| Fair Value, Inputs, Level 2 \| Taxable municipal
Securities available-for-sale:
Securities available-for-sale, at fair value	1,649	1,685
Fair Value, Recurring \| Fair Value, Inputs, Level 2 \| Mortgage-backed
Securities available-for-sale:
Securities available-for-sale, at fair value	$ 169,810	$ 127,193

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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