Condensed Consolidated Statements of Income - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Interest Income
Loans	$ 22,016,000	$ 16,804,000	$ 56,821,000	$ 44,870,000
Investment securities:
Trading	1,300,000	1,516,000	4,124,000	3,015,000
Available for sale	1,259,000	825,000	3,175,000	2,393,000
Federal Home Loan Bank stock	80,000	80,000	240,000	240,000
Other	1,351,000	602,000	3,117,000	1,730,000
Total interest income	26,006,000	19,827,000	67,477,000	52,248,000
Interest Expense
Deposits	5,659,000	3,016,000	14,170,000	7,976,000
Borrowed funds	1,957,000	1,841,000	5,662,000	5,483,000
Total interest expense	7,616,000	4,857,000	19,832,000	13,459,000
Net interest income	18,390,000	14,970,000	47,645,000	38,789,000
Provision for loan losses	592,000	240,000	1,072,000	720,000
Net Interest Income After Provision for Loan Losses	17,798,000	14,730,000	46,573,000	38,069,000
Non interest Income
Gain on sale of loans	7,204,000	10,499,000	27,813,000	17,109,000
Loan servicing fees (costs), net	(83,000)	116,000	2,301,000	2,207,000
Mortgage warehouse fees	749,000	890,000	2,007,000	2,068,000
Gains on sale of investments available for sale (includes $0, $24, $0 and $24, respectively, related to accumulated other comprehensive earnings reclassifications)		24,000		24,000
Other income	186,000	100,000	652,000	172,000
Total noninterest income	8,056,000	11,629,000	32,773,000	21,580,000
Noninterest Expense
Salaries and employee benefits	5,350,000	3,798,000	14,417,000	10,069,000
Loan expenses	1,119,000	1,171,000	3,072,000	3,077,000
Occupancy and equipment	326,000	331,000	1,080,000	1,003,000
Professional fees	561,000	204,000	1,091,000	943,000
Deposit insurance expense	230,000	324,000	704,000	914,000
Technology expense	325,000	276,000	831,000	697,000
Other expense	1,031,000	1,069,000	2,649,000	2,633,000
Total noninterest expense	8,942,000	7,173,000	23,844,000	19,336,000
Income Before Income Taxes	16,912,000	19,186,000	55,502,000	40,313,000
Provision for Income Taxes (includes $0, $10, $0 and $10, respectively, related to income tax expense for reclassification items)	6,445,000	7,587,000	21,147,000	15,940,000
Net Income	$ 10,467,000	$ 11,599,000	$ 34,355,000	$ 24,373,000
Basic earnings per share (in dollar per share)	$ 0.45	$ 0.51	$ 1.50	$ 1.10
Diluted earnings per share (in dollar per share)	$ 0.45	$ 0.51	$ 1.50	$ 1.10
Weighted-average shares outstanding Basic (in Shares)	21,310,199	21,111,200	21,180,384	21,111,200
Weighted-average shares outstanding Diluted (in Shares)	21,318,359	21,113,961	21,186,444	21,112,842
Dividends per share	$ 0.05	$ 0.05	$ 0.15	$ 0.15