Share-Based Compensation - Restricted Stock (Details) - Restricted Stock	3 Months Ended
	Mar. 31, 2022 USD ($) $ / shares shares
Restricted Stock Activity
Outstanding at the beginning of the period (in shares) | shares	3,066
Assumed restricted stock shares from ACBI merger (in shares) | shares	84,224
Vested (in shares) | shares	(1,916)
Outstanding at the end of the period (in shares) | shares	85,374
Weighted-Average Grant-Date Fair Value
Outstanding at the beginning of the period (in dollars per share) | $ / shares	$ 67.31
Assumed restricted stock shares from ACBI merger (in dollars per share) | $ / shares	90.00
Vested (in dollars per share) | $ / shares	90.00
Outstanding at the end of the period (in dollars per share) | $ / shares	$ 89.19
Additional disclosures
Total unrecognized compensation cost related to nonvested restricted stock and RSUs granted | $	$ 5,700,000
Weighted-average period over which unrecognized compensation cost is expected to be recognized	1 year 8 months 12 days
Total fair value of shares vested during the period | $	$ 172,440
Employees
Share-Based Compensation
Vesting period	4 years
Non-employee directors
Share-Based Compensation
Vesting period	12 months