CONDENSED FINANCIAL INFORMATION OF PARENT COMPANY (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Assets
Cash and interest-bearing deposits in banks	$ 43,488,000	$ 46,297,000
Securities available-for-sale	341,665,000	424,617,000
Other assets	4,656,000	8,594,000
Total assets	1,851,160,000	1,851,728,000
Liabilities:
Notes payable	27,703,000	29,128,000
Junior subordinated debentures	29,384,000	29,384,000
Other	5,605,000	10,624,000
Total liabilities	1,660,411,000	1,662,487,000
Total shareholders' equity	190,749,000	189,241,000	161,837,000	136,653,000
Total liabilities and stockholders' equity	1,851,160,000	1,851,728,000
Expenses:
Interest on short- and long-term debt	1,232,000	756,000	807,000
Professional fees	1,709,000	2,022,000	2,518,000
Income before income taxes	20,327,000	13,421,000	5,037,000
Income tax benefit	(6,151,000)	(3,779,000)	(564,000)
Net earnings	14,176,000	9,642,000	4,473,000
Cash flows from operating activities:
Net earnings	14,176,000	9,642,000	4,473,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Net cash provided by operating activities	25,884,000	17,947,000	13,204,000
Cash flows from investing activities:
Purchase of securities available-for-sale	(68,043,000)	(100,384,000)	(149,332,000)
Net cash (used in) provided by investing activities	(38,931,000)	(5,296,000)	(47,506,000)
Cash flows from financing activities:
Proceeds from issuance of Series B preferred stock	0	0	32,000,000
Proceeds from exercise of stock options	69,000	100,000	67,000
Payment of preferred dividends	(1,519,000)	(1,579,000)	(938,000)
Payment of common dividends	(3,320,000)	(2,932,000)	(2,725,000)
Repayment of long-term debt	(1,000,000)	0	0
Net cash (used in) provided by financing activities	(795,000)	(22,381,000)	25,698,000
Net increase (decrease) in cash and cash equivalents	(13,842,000)	(9,730,000)	(8,604,000)
Cash and cash equivalents, beginning of year	73,573,000	83,303,000	91,907,000
Cash and cash equivalents, end of year	59,731,000	73,573,000	83,303,000
Parent Company [Member]
Assets
Cash and interest-bearing deposits in banks	7,879,000	4,982,000
Securities available-for-sale	735,000	0
Other assets	2,561,000	2,233,000
Investment in and advances to subsidiaries	211,575,000	217,049,000
Total assets	222,750,000	224,264,000
Liabilities:
Dividends payable	1,093,000	1,113,000
Notes payable	1,000,000	2,000,000
Junior subordinated debentures	29,384,000	29,384,000
Other	524,000	2,526,000
Total liabilities	32,001,000	35,023,000
Total shareholders' equity	190,749,000	189,241,000
Total liabilities and stockholders' equity	222,750,000	224,264,000
Revenue:
Dividends from Bank and nonbank subsidiaries	11,000,000	0	0
Rental and other income	125,000	102,000	908,000
Total revenue	11,125,000	102,000	908,000
Expenses:
Interest on short- and long-term debt	1,415,000	984,000	971,000
Professional fees	345,000	804,000	337,000
Other expenses	547,000	1,126,000	643,000
Total expenses	2,307,000	2,914,000	1,951,000
Income before income taxes	8,818,000	(2,812,000)	(1,043,000)
Equity in undistributed earnings of subsidiaries	4,600,000	11,477,000	5,167,000
Income tax benefit	758,000	977,000	349,000
Net earnings	14,176,000	9,642,000	4,473,000
Cash flows from operating activities:
Net earnings	14,176,000	9,642,000	4,473,000
Adjustments to reconcile net earnings to net cash provided by operating activities:
Undistributed earnings of subsidiaries	(4,600,000)	(11,477,000)	(5,167,000)
Other, net	(672,000)	(2,307,000)	144,000
Net cash provided by operating activities	8,904,000	(4,142,000)	(550,000)
Cash flows from investing activities:
Purchase of securities available-for-sale	(464,000)	0	0
Investments in and advances to subsidiaries	0	0	(11,972,000)
Outlays for business acquisition, net of cash acquired	0	(14,360,000)	0
Other, net	223,000	0	0
Net cash (used in) provided by investing activities	(241,000)	(14,360,000)	(11,972,000)
Cash flows from financing activities:
Proceeds from issuance of Series B preferred stock	0	0	32,000,000
Payment to redeem Series A preferred stock	0	0	(20,000,000)
Proceeds from exercise of stock options	69,000	100,000	68,000
Payment of preferred dividends	(1,519,000)	(1,579,000)	(938,000)
Payment of common dividends	(3,320,000)	(2,932,000)	(2,724,000)
Repayment of long-term debt	(1,000,000)	0	0
Tax benefit from exercise of stock options	4,000	1,000	0
Net cash (used in) provided by financing activities	(5,766,000)	(4,410,000)	8,406,000
Net increase (decrease) in cash and cash equivalents	2,897,000	(22,912,000)	(4,116,000)
Cash and cash equivalents, beginning of year	4,982,000	27,894,000	32,010,000
Cash and cash equivalents, end of year	$ 7,879,000	$ 4,982,000	$ 27,894,000