CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (UNAUDITED) (USD $) In Thousands, unless otherwise specified	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]
Balance at Dec. 31, 2009	$ 202,249	$ 20,928	$ 146,357	$ 53,812	$ (23,545)	$ 4,229	$ 468
Comprehensive income:
Net Income	21,946			20,897			1,049
Net unrealized gains on available for sale securities, net of tax	9,008					9,008
Reclassification adjustment for gains on sales of available for sale securities included in net income, net of tax	(9,760)					(9,760)
Noncredit portion of other-than-temporary impairment losses on available for sale securities, net of tax	23					23
Reclassification of other-than-temporary impairment charges on available for sale securities included in net income, net of tax	49					49
Adjustment to net periodic benefit cost, net of tax	407					407
Total comprehensive income	21,673
Issuance of common stock	901	134	767
Purchase of common stock	(24)				(24)
Tax benefit of incentive stock options	316		316
Capital distribution to noncontrolling interest shareholders	(310)						(310)
Dividends paid on common stock	(5,241)			(5,241)
Stock dividend declared	0	943	14,570	(15,513)
Balance at Jun. 30, 2010	219,564	22,005	162,010	53,955	(23,569)	3,956	1,207
Balance at Dec. 31, 2010	215,574	22,075	162,877	64,179	(28,377)	(6,293)	1,113
Comprehensive income:
Net Income	22,365			21,007			1,358
Net unrealized gains on available for sale securities, net of tax	17,082					17,082
Reclassification adjustment for gains on sales of available for sale securities included in net income, net of tax	(3,556)					(3,556)
Adjustment to net periodic benefit cost, net of tax	462					462
Total comprehensive income	36,353
Issuance of common stock	567	36	531
Stock compensation expense	26		26
Tax benefit of incentive stock options	2		2
Capital distribution to noncontrolling interest shareholders	(475)						(475)
Dividends paid on common stock	(5,453)			(5,453)
Stock dividend declared	0	981	15,014	(15,995)
Balance at Jun. 30, 2011 (Restated)	$ 246,594	$ 23,092	$ 178,450	$ 63,738	$ (28,377)	$ 7,695	$ 1,996