CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Loans, allowances	$ 17,485	$ 13,611
Common stock, no par value	$ 0	$ 0
Common stock, shares outstanding (in shares)		1,467,155
Common Stock
Common stock, shares authorized (in shares)	85,000,000	85,000,000
Common stock, shares issued (in shares)	22,176,956	22,106,374
Common stock, shares outstanding (in shares)	22,176,956	22,106,374
Nonvoting Common Stock
Common stock, shares authorized (in shares)	2,000,000	2,000,000
Common stock, shares issued (in shares)	1,467,155	1,467,155
Common stock, shares outstanding (in shares)	1,467,155