CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities
Net income	$ 10,250,000	$ 2,235,000
Adjustments to reconcile net income to net cash used in operating activities:
Stock-based compensation	70,000	163,000
Provision for loan losses	961,000	1,290,000
Accretion of acquisition discount on purchased loans	(6,552,000)	(5,084,000)
Depreciation	1,564,000	756,000
Amortization of core deposit intangible	815,000	227,000
Amortization of acquisition premium on time deposits	(1,033,000)	(614,000)
Net accretion of acquisition discount on long-term debt	211,000	(9,000)
Gain on mortgage loan commitments	(294,000)	24,000
Gain on sales of loans held for sale	(3,594,000)	(2,519,000)
Originations of loans held for sale	(82,441,000)	(42,264,000)
Proceeds from sales of loans held for sale	73,918,000	42,288,000
Increase in cash surrender value of bank-owned life insurance	(472,000)	(238,000)
Deferred income taxes	5,846,000	1,681,000
Gain on sales of available for sale securities	(1,000)	0
Net amortization of premiums on available for sale securities	1,345,000	624,000
Net loss on disposal of foreclosed assets	(58,000)	20,000
Valuation adjustments on foreclosed assets	166,000	62,000
Gain on sales of loans held for investment	0	(362,000)
Change in assets and liabilities:
Decrease in accrued interest receivable	121,000	725,000
(Increase) decrease in other assets	(6,260,000)	839,000
Decrease in accrued interest payable	(692,000)	(445,000)
Decrease in other liabilities	(2,127,000)	(901,000)
Net cash used in operating activities	(8,257,000)	(1,502,000)
Cash flows from investing activities
Purchases of investment securities available for sale	0	(9,542,000)
Purchases of investment securities held to maturity	0	(3,119,000)
Proceeds from maturities and repayments of investment securities available for sale	17,181,000	9,388,000
Proceeds from call of investment securities held to maturity	0	500,000
Proceeds from sales of investment securities available for sale	197,000	0
Loan originations and principal collections, net	(9,897,000)	11,301,000
Proceeds from sales of loans	0	817,000
Purchases of trade accounts receivable, net	(17,308,000)	(21,037,000)
Purchases of premises and equipment	(484,000)	(231,000)
Disposals of premises and equipment	616,000	1,240,000
Proceeds from disposal of foreclosed assets	718,000	0
Purchases and redemptions of Federal Home Loan Bank stock, net	(778,000)	474,000
Net cash used in investing activities	(9,755,000)	(10,209,000)
Cash flows from financing activities
Net decrease in deposits	(37,156,000)	(16,813,000)
Proceeds from issuance of short-term borrowings, net	57,500,000	0
Proceeds from issuance (repayment) of long-term debt, net	(25,676,000)	50,000
Proceeds from exercise of stock options	120,000	99,000
Proceeds from issuance of subsidiary common stock, net of issuance costs	0	44,466,000
Repurchase of subsidiary preferred stock	0	(42,849,000)
Dividends paid on subsidiary preferred stock	0	(578,000)
Dividends paid on preferred stock	(639,000)	0
Net cash provided by financing activities	(5,851,000)	(15,625,000)
Net change in cash and cash equivalents	(23,863,000)	(27,336,000)
Cash and cash equivalents, beginning of period	132,365,000	100,779,000
Cash and cash equivalents, end of period	108,502,000	73,443,000
SUPPLEMENTAL DISCLOSURES:
Interest	6,180,000	3,836,000
Income taxes	0	0
Noncash investing activities:
Transfers of loans to foreclosed assets	362,000	309,000
Change in fair value of securities available for sale, net of tax	2,774,000	2,035,000
Change in fair value of cash flow hedge, net of tax	$ (2,558,000)	$ (584,000)