Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash flows from operating activities
Net income	$ 6,470,000	$ 6,167,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Provision for loan losses	1,700,000	500,000
Write down of other real estate owned	18,000	777,000
Depreciation and amortization	4,107,000	3,588,000
Stock based compensation	1,584,000	1,329,000
Loss on sale of investment securities	1,000	61,000
Amortization of premiums on investment securities	2,271,000	1,788,000
Accretion of discounts on retained SBA loans	(1,073,000)	(859,000)
Fair value adjustments on SBA servicing assets	1,252,000	711,000
Proceeds from sales of SBA loans originated for sale	36,811,000	28,564,000
SBA loans originated for sale	(34,969,000)	(22,395,000)
Gains on sales of SBA loans originated for sale	(2,654,000)	(2,315,000)
Proceeds from sales of mortgage loans originated for sale	355,181,000	263,689,000
Mortgage loans originated for sale	(335,734,000)	(274,133,000)
Fair value adjustment for mortgage loans originated for sale	474,000	(716,000)
Gains on sales of mortgage loans originated for sale	(6,400,000)	(6,340,000)
Amortization of intangible assets		61,000
Amortization of debt issuance costs	5,000	22,000
Increase in accrued interest receivable and other assets	(1,278,000)	(3,720,000)
Decrease in accrued interest payable and other liabilities	(1,049,000)	(34,000)
Net cash provided by (used in) operating activities	26,717,000	(3,255,000)
Cash flows from investing activities
Purchase of investment securities available for sale	(81,744,000)	(53,052,000)
Purchase of investment securities held to maturity	(61,083,000)	(21,958,000)
Proceeds from the sale of securities available for sale	5,713,000	21,167,000
Proceeds from the maturity or call of securities available for sale	39,409,000	25,665,000
Proceeds from the maturity or call of securities held to maturity	46,156,000	36,629,000
Redemption (purchase) of restricted stock	2,000	(312,000)
Net increase in loans	(217,967,000)	(131,100,000)
Net proceeds from sale of other real estate owned	495,000	357,000
Premises and equipment expenditures	(11,072,000)	(18,263,000)
Net cash used in investing activities	(280,091,000)	(140,867,000)
Cash flows from financing activities
Net proceeds from exercise of stock options	668,194	615,226
Net increase in demand, money market and savings deposits	324,658,000	197,431,000
Net increase in time deposits	12,405,000	10,304,000
Net cash provided by financing activities	337,731,000	208,350,000
Net increase in cash and cash equivalents	84,357,000	64,228,000
Cash and cash equivalents, beginning of year	61,942,000	34,554,000
Cash and cash equivalents, end of period	146,299,000	98,782,000
Supplemental disclosures
Interest paid	10,749,000	6,109,000
Income taxes paid		75,000
Non-cash transfers from loans to other real estate owned	315,000	129,000
Conversion of subordinated debt to common stock	$ 10,094,000	$ 240,000