Employee Benefit Plans (Details) (USD $)	12 Months Ended				0 Months Ended	12 Months Ended			12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Cash and Cash Equivalents [Member]	Dec. 10, 2010 Defined Benefit Pension Plan [Member]	Dec. 31, 2010 Defined Benefit Pension Plan [Member]	Dec. 31, 2012 Defined Benefit Pension Plan [Member]	Dec. 31, 2011 Defined Benefit Pension Plan [Member]	Dec. 31, 2012 Supplemental Executive Retirement Plan [Member]	Dec. 31, 2011 Supplemental Executive Retirement Plan [Member]	Dec. 31, 2010 Supplemental Executive Retirement Plan [Member]
Change in Benefit Obligations [Roll Forward]
Benefit obligation, beginning						$ 6,731,000			$ 1,218,000	$ 1,315,000	$ 1,411,000
Service cost						0			92,000	106,000	118,000
Interest cost						318,000			55,000	72,000	85,000
Actuarial (gain) loss						0			272,000	(275,000)	257,000
Benefits paid					7,086,000	(7,204,000)			0	0	0
Decrease in obligation due to curtailment						0
Loss due to settlement						155,000
Prior service cost due to amendment						0			0	0	(556,000)
Benefit obligation, ending						0			1,637,000	1,218,000	1,315,000
Change in Plan Assets [Roll Forward]
Fair value of plan assets, beginning						6,452,000			0	0
Actual return on plan assets						(13,000)
Employer contributions						765,000
Benefits paid					7,086,000	(7,204,000)			0	0	0
Fair value of plan assets, ending						0			0	0	0
Funded status, ending						0			(1,637,000)	(1,218,000)	(1,315,000)
Amounts Recognized on the Balance Sheet [Abstract]
Other assets						0
Other assets, deferred income tax benefit	556,000	414,000							24,000	123,000	30,000
Other liabilities						0			1,637,000	1,218,000	1,315,000
Other comprehensive income (loss)						279,000			47,000	239,000	58,000
Amounts Recognized in Accumulated Other Comprehensive Loss [Abstract]
Net gain (loss)						(279,000)			(53,000)	(345,000)	(71,000)
Prior service cost						0			(18,000)	(17,000)	(17,000)
Net obligation at transition						0			0	0	0
Deferred tax benefit expense						95,000			24,000	123,000	30,000
Amount recognized						(184,000)			(47,000)	(239,000)	(58,000)
Funded Status [Abstract]
Benefit obligation						0			(1,637,000)	(1,218,000)	(1,315,000)
Fair value of assets						0			0	0	0
Unrecognized net actuarial (gain)/loss									0	0	0
Unrecognized net obligation at transition									0	0	0
Unrecognized prior service cost									0	0	0
Prepaid (accrued) benefit cost included in other assets (liabilities)									(1,637,000)	(1,218,000)	(1,315,000)
Components of Net Periodic Benefit Cost [Abstract]
Service cost						0			92,000	106,000	118,000
Interest cost						318,000			55,000	72,000	85,000
Expected return on plan assets						(256,000)			0	0	0
Amortization of prior service cost						0			1,000	1,000	47,000
Amortization of net obligation at transition						0			0	0	0
Recognized net loss due to curtailment or settlement						703,000
Recognized net actuarial loss (gain)						0			(20,000)	0	(15,000)
Net periodic benefit cost						765,000			128,000	179,000	235,000
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income [Abstract]
Net (gain)/loss						(279,000)			292,000	(274,000)	272,000
Prior service cost						0			0	0	(556,000)
Amortization of prior service cost						0			(1,000)	(1,000)	(47,000)
Net obligation at transition						0			0	0	0
Amortization of net obligation at transition						0			0	0	0
Total recognized						(279,000)			291,000	(275,000)	(331,000)
Income tax expense (benefit)						(95,000)			99,000	(93,000)	(113,000)
Net amount recognized in other comprehensive (income) loss						(184,000)			192,000	(182,000)	(218,000)
Total recognized in net periodic benefit costs and other comprehensive (income) loss before income tax						486,000			419,000	(96,000)	(96,000)
Accumulated benefit obligation for deferred benefit pension plan							0	0
Weighted-Average Assumptions Used in Computing Ending Obligations [Abstract]
Discount rate used for disclosures (in hundredths)									4.00%	4.50%	5.50%
Expected return on plan assets (in hundredths)						4.00%
Rate of compensation increase (in hundredths)						4.00%			3.25%	4.00%	4.00%
Weighted-Average Assumptions Used in Computing Net Periodic Benefit Cost [Abstract]
Discount rate used for net periodic benefit cost (in hundredths)						4.75%			4.50%	5.50%	6.00%
Expected return on plan assets (in hundredths)						4.00%
Rate of compensation increase (in hundredths)						4.00%
Asset allocation (in hundredths)				100.00%
Estimated future benefit payments [Abstract]
December 31, 2013	1,000
December 31, 2014	3,000
December 31, 2015	23,000
December 31, 2016	77,000
December 31, 2017	90,000
Thereafter	720,000
401(k) Plan [Abstract]
Period of service required to be eligible	3 years
Minimum years of age to be eligible	18 years
Maximum annual contribution per employee (in hundredths)	100.00%
Employer matching contribution of first 1% (in hundredths)	100.00%
Employer matching contribution for next 5% of employee contribution (in hundredths)	50.00%
Employer matching contribution, maximum (in hundredths)	3.50%
Additional safe harbor contribution by employer (in hundredths)	6.00%
401(k) expenses	719,000	654,000	662,000
Deferred Compensation Plan [Abstract]
Number of installments available, minimum	1
Number of installments available, maximum	5
Deferred compensation expense	33,000	18,000	6,000
Cash surrender value of life insurance	$ 1,180,000	$ 1,146,000	$ 1,112,000