Parent Company Financial Statements - Condensed Statements of Cash Flows (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
OPERATING ACTIVITIES:
Net Income from continuing operations	$ 7,935	$ 7,560	$ 6,684
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	2,750	9,400	8,991
Compensation associated with stock options	31	61	36
Other Assets	5,145	495	(3,547)
Other Liabilities	4,970	120	95
Net cash provided by operating activities	9,928	39,679	6,245
INVESTING ACTIVITIES:
Proceeds from sale of mortgage subsidiary	0	321	0
Net cash provided (used) by investing activities	34,429	(82,752)	(6,154)
FINANCIAL ACTIVITIES:
Proceeds from the issuance of Series B, preferred stock, net	0	0	2,931
Proceeds from stock options exercised	16	0	0
Repurchase of common stock	10,614	4,305	0
Common stock warrant repurchased	0	0	125
Cash dividends paid on common stock	2,111	1,988	2,039
Cash dividends paid on preferred stock	347	945	737
Net cash provided by (used in) financing activities	(30,910)	40,826	(15,010)
Changes in cash and cash equivalents	13,447	(2,247)	(14,919)
Cash and cash equivalents at beginning of year	45,068	47,315	62,234
Cash and cash equivalents at end of year	58,515	45,068	47,315
Parent company [Member]
OPERATING ACTIVITIES:
Net Income from continuing operations	7,935	7,560	6,684
Adjustments to reconcile net income to net cash provided by operating activities:
Provision for loan losses	0	0	(39)
Compensation associated with stock options	1	(1)	25
Other Assets	(257)	378	(6)
Other Liabilities	0	(824)	(144)
Equity in undistributed net income of subsidiaries	3,613	(2,190)	(7,503)
Net cash provided by operating activities	11,292	4,923	(983)
INVESTING ACTIVITIES:
Payments for investments in and advances to subsidiaries	0	0	(2,700)
Repayments for investments in and advances to subsidiaries	0	0	700
Promissory note repayments	1,230	410	0
Participation loan payments	0	0	2,289
Proceeds from sale of mortgage subsidiary	0	321	0
Net cash provided (used) by investing activities	1,230	731	289
FINANCIAL ACTIVITIES:
Proceeds from the issuance of Series B, preferred stock, net	0	0	19,931
Retirement of Series A, preferred stock	0	0	(17,000)
Proceeds from stock options exercised	16	0	0
Repurchase of common stock	(10,614)	(4,305)	0
Common stock warrant repurchased	0	0	(125)
Cash dividends paid on common stock	(2,111)	(1,988)	(2,039)
Cash dividends paid on preferred stock	(347)	(945)	(998)
Net cash provided by (used in) financing activities	(13,056)	(7,240)	(231)
Changes in cash and cash equivalents	(534)	(1,586)	(925)
Cash and cash equivalents at beginning of year	1,735	3,321	4,246
Cash and cash equivalents at end of year	$ 1,201	$ 1,735	$ 3,321