Consolidated Statement of Cash Flows (unaudited) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 12,695	$ 9,546
Adjustments to reconcile net income to net cash provided (used) by operating activities:
Amortization and accretion of premiums and discounts on securities, net	864	1,751
Accretion of loan discounts, net	(506)	(350)
Amortization of deposit premiums	(227)	(425)
Amortization of core deposit intangibles	184	184
Provision for loan losses	1,443	1,126
Depreciation	1,062	1,012
Net gain on sale of real estate acquired by foreclosure	(139)	(521)
Writedown of real estate acquired by foreclosure	141
Net gain on sale of guaranteed portion of loans	(2,273)	(1,032)
Stock-based compensation expense	1,208	252
Decrease (increase) in accrued interest receivable and other assets, net	(540)	111
Increase in accrued interest payable and other liabilities, net	675	(113)
Net Cash Provided by (Used in) Operating Activities, Continuing Operations, Total	14,587	11,541
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from the maturities or calls and paydowns of available-for-sale securities	27,889	37,429
Purchases of available-for-sale securities	(20,080)	(54,771)
Proceeds from the maturities or calls and paydowns of held-to-maturity securities	7,306	8,955
Purchases of held-to-maturity securities	(3,452)	(8,988)
Proceeds from sale of guaranteed portion of loans	27,436	25,163
Proceeds from sale of real estate acquired by foreclosure	1,825	3,438
Net increase in Federal Home Loan Bank of Dallas stock	(1,243)	(68)
Net increase in Federal Reserve Bank stock	(2,033)	(11)
Net increase in loans held for investment	(172,782)	(93,851)
Investment in construction of premises and purchases of other fixed assets	(777)	(1,843)
Net cash used in investing activities	(135,911)	(84,547)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in deposit accounts	130,546	22,275
Net increase (decrease) in securities sold under agreements to repurchase	1,808	(184)
Net proceeds from other short-term borrowed funds	(45,000)
Repayment of other long-term borrowed funds	(1,858)	(7,441)
Proceeds from issuance of common stock due to exercise of stock options	76
Proceeds from issuance of common stock, net of issuance expenses	72,542
Net cash provided by (used in) financing activities	158,114	14,650
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	36,790	(58,356)
CASH AND CASH EQUIVALENTS:
Beginning of year	34,757	178,492
End of period	71,547	120,136
SUPPLEMENTAL INFORMATION:
Interest paid	7,330	8,591
Income taxes paid	6,200	4,916
Noncash investing and financing activities - acquisition of real estate through foreclosure of collateral		$ 3,797