Consolidated Statements of Financial Condition (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Statement Of Financial Position [Abstract]
Loans, net of allowance for loan losses	$ 14,346	$ 9,584
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, authorized shares	2,000,000	2,000,000
Preferred stock, shares issued	28,750	0
Preferred stock, shares outstanding	28,750	0
Common stock, par value	$ 4.00	$ 4.00
Common stock, authorized shares	10,000,000	10,000,000
Common stock, shares issued	8,277,837	8,260,259
Common stock, shares outstanding	8,277,837	8,260,259
Common stock, non-vested shares	162,917	160,961