Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash flows from operating activities
Net income	$ 20,540,000	$ 11,038,000
Adjustments to reconcile net income to net cash from operating activities
Depreciation and amortization	8,596,000	4,734,000
Accretion of acquired loans	(4,264,000)	(1,687,000)
Provision for loan losses	(1,500,000)	(3,000,000)
Stock-based compensation expense	525,000	364,000
Stock grants to directors for retainer fee	402,000	155,000
Proceeds from sales of mortgage loans held for sale	94,608,000	41,246,000
Origination of mortgage loans held for sale	(92,260,000)	(40,481,000)
Net gain from sales of mortgage loans held for sale	(2,831,000)	(935,000)
Net gain from sales and valuation write-down of foreclosed assets	(104,000)	(721,000)
Net gain from sales of fixed assets	(22,000)	0
Net gain from sales of available for sale securities	(5,000)	0
Earnings on bank owned life insurance	(820,000)	(880,000)
Net change in:
Accrued interest receivable	(321,000)	(269,000)
Other assets	(1,731,000)	184,000
Accrued interest and other liabilities	4,754,000	(1,261,000)
Net cash from operating activities	25,567,000	8,487,000
Cash flows from investing activities
Cash received in merger	0	91,806,000
Loan originations and payments, net	(127,390,000)	(70,034,000)
Purchases of securities available for sale	(8,266,000)	(14,379,000)
Proceeds from maturities, calls and repayments of securities available for sale	72,277,000	46,445,000
Proceeds from sales of securities available for sale	665,000	0
Proceeds from sales of foreclosed assets	1,431,000	3,184,000
Proceeds from FHLB stock redemption	6,132,000	0
Purchases of premises and equipment	(932,000)	(1,167,000)
Net cash from (for) investing activities	(56,083,000)	55,855,000
Cash flows from financing activities
Net decrease in time deposits	(118,950,000)	(40,963,000)
Net increase (decrease) in all other deposits	97,535,000	(35,065,000)
Net increase (decrease) in securities sold under agreements to repurchase	(9,420,000)	19,080,000
Proceeds from Federal Home Loan Bank advances	20,000,000	0
Maturities of Federal Home Loan Bank advances	(6,000,000)	0
Proceeds from stock option exercises	281,000	229,000
Employee stock purchase plan	33,000	10,000
Dividend reinvestment plan	456,000	90,000
Repurchase of common stock shares	(15,223,000)	0
Payment of cash dividends to common shareholders	(7,085,000)	(22,436,000)
Net cash for financing activities	(38,373,000)	(79,055,000)
Net change in cash and cash equivalents	(68,889,000)	(14,713,000)
Cash and cash equivalents at beginning of period	172,738,000	146,965,000
Cash and cash equivalents at end of period	103,849,000	132,252,000
Cash paid during the period for:
Interest	8,625,000	8,574,000
Federal income tax	5,700,000	1,575,000
Noncash financing and investing activities:
Transfers from loans to foreclosed assets	$ 1,604,000	$ 1,084,000