CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash Flows from Operating Activities
Net income	$ 27,626,000	$ 17,283,000
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan losses	520,000	3,038,000
Mortgage banking income	(6,531,000)	(1,140,000)
Changes in fair value on loans held for sale	2,559,000	(3,988,000)
Net losses on real estate owned and other repossessed assets sold	236,000	143,000
Net gain on available for sale securities sold	(233,000)	(566,000)
Amortization of premiums and accretion of discounts	4,311,000	3,169,000
Depreciation and amortization	2,030,000	2,018,000
Net change in interest receivable	(361,000)	326,000
Net change in interest payable	80,000	506,000
Net change in prepaid and other assets	(4,746,000)	1,807,000
Net change in other liabilities	2,041,000	3,956,000
Stock based compensation	765,000	697,000
Net principal disbursed on loans originated for sale	(249,923,000)	(194,232,000)
Proceeds from sale of loans held for sale	240,181,000	203,676,000
Net change in deferred tax assets	3,434,000	2,047,000
Cash surrender value of life insurance	(1,301,000)	(1,189,000)
Net cash from operating activities	20,688,000	37,551,000
Cash Flows from Investing Activities
Proceeds from the principal repayments and maturities of securities available for sale	7,880,000	19,164,000
Proceeds from the principal repayments and maturities of securities held to maturity	6,924,000	11,625,000
Proceeds from the sale of securities available for sale	10,361,000	62,906,000
Proceeds from the sale of real estate owned and other repossessed assets	1,002,000	1,231,000
Proceeds from the sale of loans held for investment	150,000	2,250,000
Proceeds from the sale of premises and equipment		3,000
Purchases of premises and equipment	(1,360,000)	(1,943,000)
Principal disbursed on loans, net of repayments	(124,577,000)	(172,222,000)
Loans purchased	(26,489,000)	(45,350,000)
Purchase of bank owned life insurance		(5,000,000)
Purchase of securities held to maturity	(3,000,000)
Redemption of FHLB stock	180,000
Net cash received in acquisitions		25,635,000
Net cash from investing activities	(128,929,000)	(101,701,000)
Cash Flows from Financing Activities
Net increase in checking, savings and money market accounts	62,533,000	37,125,000
Net increase in certificates of deposit	333,455,000	120,496,000
Net decrease in advance payments by borrowers for taxes and insurance	(8,544,000)	(8,297,000)
Net change in short-term FHLB advances	(262,000,000)	(86,500,000)
Net change in repurchase agreements and other borrowed funds	41,000	(1,092,000)
Proceeds from the exercise of stock options	232,000	216,000
Dividends paid	(9,478,000)	(4,970,000)
Purchase of treasury stock	(613,000)	(705,000)
Net cash from financing activities	115,626,000	56,273,000
Change in cash and cash equivalents	7,385,000	(7,877,000)
Cash and cash equivalents, beginning of period	46,880,000	45,887,000
Cash and cash equivalents, end of period	$ 54,265,000	$ 38,010,000