Fair Value Measurements - Schedule of Assets Measured at Fair Value on Nonrecurring Basis (Details) - Non-Recurring - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated	$ 1,122	$ 6,330	$ 30,848	$ 10,759
Gain (losses) from fair value changes on impaired loans	(150)	0	(150)	(1,305)
Other real estate owned	46	36	46	124
Gain (losses) from fair value changes on other real estate owned	0	(4)	(8)	(27)
Quoted prices in active markets for identical assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated	0	0	0	0
Other real estate owned	0	0	0	0
Significant other observable inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated	0	6,330	0	10,759
Other real estate owned	46	36	46	124
Significant unobservable inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Individually evaluated	1,122	0	30,848	0
Other real estate owned	$ 0	$ 0	$ 0	$ 0