Consolidated Statements of Income - USD ($)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Interest and Dividend Income
Loans receivable	$ 68,474,000	$ 51,231,000	$ 46,785,000
Investment securities	10,363,000	7,037,000	6,500,000
Federal Home Loan Bank stock	606,000	470,000	441,000
Deposits with financial institutions	251,000	130,000	76,000
Total interest and dividend income	79,694,000	58,868,000	53,802,000
Interest Expense
Deposits	10,856,000	6,815,000	5,296,000
Federal Home Loan Bank advances	4,869,000	3,604,000	3,604,000
Other	866,000	192,000	347,000
Total interest expense	16,591,000	10,611,000	9,247,000
Net Interest Income	63,103,000	48,257,000	44,555,000
Provision for loan losses	2,120,000	1,220,000	850,000
Net Interest Income After Provision for Loan Losses	60,983,000	47,037,000	43,705,000
Non-interest Income
Service fee income	7,937,000	6,584,000	6,124,000
Net realized gain on sales of available for sale securities	804,000	708,000	1,023,000
Commissions	4,865,000	5,027,000	5,049,000
Net gains on sales of loans	3,126,000	3,887,000	4,761,000
Net servicing fees	591,000	391,000	332,000
Increase in cash value of life insurance	1,239,000	1,113,000	1,159,000
Loss on sale of other real estate and repossessed assets	(43,000)	(122,000)	(210,000)
Other income	1,055,000	488,000	1,184,000
Total non-interest income	19,574,000	18,076,000	19,422,000
Non-interest Expenses
Salaries and employee benefits	32,964,000	27,229,000	27,427,000
Net occupancy expenses	3,965,000	3,133,000	2,308,000
Equipment expenses	2,514,000	1,773,000	1,818,000
Data processing fees	2,624,000	2,321,000	1,991,000
ATM and debit card expenses	2,290,000	1,676,000	1,536,000
Deposit insurance	898,000	724,000	788,000
Professional fees	2,177,000	1,855,000	1,807,000
Advertising and promotion	1,606,000	1,223,000	1,204,000
Software subscriptions and maintenance	2,719,000	2,202,000	2,117,000
Intangible amortization	1,103,000	264,000	420,000
Other real estate and repossessed assets	189,000	165,000	73,000
Other expenses	5,684,000	3,440,000	4,011,000
Total non-interest expenses	58,733,000	46,005,000	45,500,000
Income Before Income Tax	21,824,000	19,108,000	17,627,000
Income tax expense	2,960,000	6,793,000	4,386,000
Net Income	$ 18,864,000	$ 12,315,000	$ 13,241,000
Earnings Per Common Share
Basic	$ 2.25	$ 1.67	$ 1.79
Diluted	2.21	1.64	1.76
Dividends Per Common Share	$ 0.74	$ 0.66	$ 0.58