Consolidated Statements of Income - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
INTEREST AND DIVIDEND INCOME:
Interest and fees on loans	$ 42,344,000	$ 30,400,000
Securities available-for-sale	3,672,000	4,068,000
FHLB and FRB dividends	408,000	322,000
Other interest income	87,000	53,000
Total interest and dividend income	46,511,000	34,843,000
INTEREST EXPENSE:
Deposits	3,893,000	2,056,000
FHLB advances and other borrowings	2,387,000	1,614,000
Other long-term debt	1,446,000	1,432,000
Total interest expense	7,726,000	5,102,000
NET INTEREST INCOME	38,785,000	29,741,000
Loan loss provision	2,627,000	980,000
NET INTEREST INCOME AFTER LOAN LOSS PROVISION	36,158,000	28,761,000
NONINTEREST INCOME:
Net gain on sale of loans	16,675,000	7,743,000
Appreciation in cash surrender value of life insurance	720,000	609,000
Net gain (loss) on sale of available-for-sale securities	69,000	(187,000)
Net gain on sale/disposal of premises and equipment	486,000	9,000
Other noninterest income	766,000	335,000
Total noninterest income	23,841,000	12,122,000
NONINTEREST EXPENSE:
Salaries and employee benefits	27,633,000	20,899,000
Occupancy and equipment expense	4,422,000	3,355,000
Data processing	3,722,000	2,842,000
Advertising	1,028,000	1,158,000
Amortization	812,000	700,000
Loan costs	805,000	632,000
Federal Deposit Insurance Corporation ("FDIC") insurance premiums	81,000	246,000
Postage	289,000	248,000
Professional and examination fees	1,052,000	767,000
Acquisition costs	2,198,000	1,169,000
Other noninterest expense	3,989,000	2,971,000
Total noninterest expenses	46,031,000	34,987,000
INCOME BEFORE PROVISION FOR INCOME TAXES	13,968,000	5,896,000
Provision for income taxes	3,096,000	914,000
NET INCOME	$ 10,872,000	$ 4,982,000
BASIC EARNINGS PER SHARE (in dollars per share)	$ 1.69	$ 0.92
DILUTED EARNINGS PER SHARE (in dollars per share)	$ 1.69	$ 0.91
Deposit Account [Member]
NONINTEREST INCOME:
Noninterest income revenue	$ 1,219,000	$ 943,000
Bank Servicing [Member]
NONINTEREST INCOME:
Noninterest income revenue	2,321,000	1,092,000
Investment Advisory, Management and Administrative Service [Member]
NONINTEREST INCOME:
Noninterest income revenue	258,000	536,000
Debit Card [Member]
NONINTEREST INCOME:
Noninterest income revenue	$ 1,327,000	$ 1,042,000