CONSOLIDATED BALANCE SHEETS (Parenthetical) (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Loans receivable, allowance	$ 15,339	$ 15,352
Accrued interest receivable, allowance	1,279	643
Cash, FDIC insured amount	$ 250,000	$ 250,000
Preferred stock, par value
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares, issued	15,037,635	15,016,700
Common stock, shares, outstanding	15,037,635	15,016,700