Consolidated Statements of Cash Flows - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
OPERATING ACTIVITIES:
Net income	$ 21,311,000	$ 17,459,000	$ 10,574,000
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	4,498,000	2,516,000	1,797,000
Provision for real estate losses	137,000	311,000	47,000
Deferred tax provision	6,001,000	7,116,000	4,371,000
Deferred tax valuation allowance		(897,000)	(120,000)
Net amortization of premiums on investment securities	1,889,000	1,309,000	626,000
Federal Home Loan Bank stock dividends	(196,000)	(39,000)	(8,000)
Loss (gain) on dispositions of fixed assets, net	8,000	(1,019,000)	(85,000)
Impairment on office properties held for sale	634,000	1,076,000
Gain on sales of real estate owned and repossessed assets, net	(291,000)	(943,000)	(587,000)
Gain on sales of investment securities, net	(48,000)	(19,000)	(20,000)
Originations of loans held for sale	(119,158,000)	(163,727,000)	(109,239,000)
Proceeds from sales of loans originated for sale	128,070,000	166,895,000	113,454,000
Gain on sales of loans originated to sell	(3,773,000)	(4,796,000)	(3,084,000)
Depreciation	3,365,000	3,706,000	3,293,000
Amortization of deferred loan costs, net	662,000	1,138,000	254,000
Accretion of purchased loans, net	(4,419,000)	(4,972,000)	(4,764,000)
Amortization of other intangible assets	1,021,000	1,021,000	724,000
Stock compensation	959,000	1,239,000	724,000
Earnings on life insurance policies	(2,031,000)	(1,665,000)	(1,498,000)
Changes in operating assets and liabilities:
Accrued interest receivable	(671,000)	(849,000)	(188,000)
Prepaid expenses and other assets	(1,113,000)	218,000	1,276,000
Other liabilities	3,556,000	(371,000)	(3,621,000)
Net cash provided by operating activities	40,411,000	24,707,000	13,926,000
INVESTING ACTIVITIES:
Cash paid for acquisition, net of cash received	0		(13,931,000)
Net decrease in federal funds sold		18,000	33,000
Purchases of interest bearing time deposits in banks	(1,485,000)	(2,590,000)
Redemptions of interest bearing time deposits in banks	1,981,000	8,949,000	1,491,000
Purchases of held to maturity (“HTM”) securities	(16,093,000)	(26,992,000)
Proceeds from maturities/calls/paydowns of HTM securities	30,000
Purchases of available for sale (“AFS”) securities	(41,575,000)	(99,001,000)	(55,951,000)
Proceeds from sales of AFS securities	2,069,000	30,386,000	21,099,000
Proceeds from maturities/calls/paydowns of AFS securities	32,223,000	74,497,000	50,724,000
Purchases in other investments	(13,122,000)	(6,152,000)	(5,205,000)
Redemptions of other investments		1,995,000	3,515,000
Loan disbursements, net of repayments	(105,774,000)	(78,047,000)	934,000
Loan participations purchased	(12,640,000)	(29,094,000)	(40,937,000)
Loan participations sold	2,245,000	9,721,000	640,000
Proceeds from sales of real estate owned and repossessed assets	2,640,000	4,340,000	4,370,000
Proceeds from sales of office properties held for sale	3,750,000	2,530,000
Proceeds from sales of office properties and equipment	3,000	6,000	951,000
Purchases of office properties and equipment	(1,328,000)	(2,069,000)	(4,652,000)
Purchases of bank owned life insurance		(3,000,000)	(772,000)
Proceeds from settlement of bank owned life insurance	1,098,000
Net cash used in investing activities	(145,978,000)	(114,503,000)	(37,691,000)
FINANCING ACTIVITIES:
Net increase (decrease) in deposits	(144,636,000)	36,397,000	(26,763,000)
Proceeds from long term advances from Federal Home Loan Bank	85,223,000	40,245,000	20,551,000
Repayments of long term advances from Federal Home Loan Bank	(85,554,000)	(25,571,000)	(14,328,000)
Net change in short term advances from Federal Home Loan Bank	245,000,000	61,800,000	4,200,000
Proceeds from other borrowings	2,400,000	4,800,000	1,850,000
Repayments of other borrowings	(12,262,000)	(1,650,000)	(1,151,000)
Net increase (decrease) in short term borrowings	(5,669,000)	7,039,000	(21,145,000)
Proceeds from exercise of stock options	643,000	141,000	37,000
Shares withheld for payment of employee payroll taxes	(275,000)	(255,000)	(185,000)
Repurchase of common stock		(3,672,000)	(256,000)
Dividends distributed	(4,524,000)	(2,820,000)
Net cash provided by (used in) financing activities	80,346,000	116,454,000	(37,190,000)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(25,221,000)	26,658,000	(60,955,000)
CASH AND CASH EQUIVALENTS:
Beginning of period	78,789,000	52,131,000	113,086,000
End of period	53,568,000	78,789,000	52,131,000
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid for interest	10,611,000	7,896,000	6,438,000
Cash received for income tax refunds			2,135,000
Cash paid for income tax	3,136,000	892,000
SUPPLEMENTAL SCHEDULE OF NONCASH INVESTING AND FINANCING ACTIVITIES:
Real estate and other assets acquired in settlement of loans	2,012,000	2,240,000	2,384,000
Sales of real estate owned financed by the Bank	24,000	146,000	282,000
Common stock issued for acquisitions			42,000,000
Office properties transferred to real estate owned	207,000		464,000
Office properties transferred to office properties held for sale	$ 1,428,000	$ 7,925,000