Pension and Employee Benefit Plans (Details Textual) (USD $)	12 Months Ended
	Dec. 31, 2012 Age	Dec. 31, 2011	Dec. 31, 2008
Pension and Employee Benefit Plans (Textual) [Abstract]
Effective date of retirement for availing post retirement health care plan	Jan. 01, 1990
Minimum age for the retirees to elect desired health care plan	65
Increase Decrease In Minimum Liability After Tax of defined benefit plans	$ 21,000	$ 601,000
Current Assets Mix percentage	100.00%
Assumed average annual returns	7.50%	7.50%
Net periodic benefit (benefit) cost representing interest cost and Amortization of net actuarial loss	(3,000)	(3,000)
Weighted average discount rate to determine the net periodic benefit cost	4.25%	5.25%
Plans Funded Status Description	Between 65 and less than 80 percent
Minimum Contribution of Employer under plans Forms 5500	5.00%
Liability has been provided in the accompanying consolidated financial statements	0
Profit sharing and 401(k) savings retirement plan for non-union employees Description	The plan covers substantially all employees who have 6 months of service, completed 1,000 hours of service and who have attained 18 years of age
Maximum discretionary contributions and provides for employee salary deferrals	100.00%		1.00%
Aggregate matching contributions and discretionary contributions Amount	402,000	381,000
Amounts charged to pension expense	1,800,000	1,300,000
Description Increase in matching contributions	We increased, effective January 1, 2008, the matching contributions to 100% of the first 1% and 50% of the next 5% of the employee deferral for a maximum match of 3.5%
Employer Matching Contribution on First one percent			100.00%
Employer Matching Contribution on Next Five percent			50.00%
Employer Matching Contribution per employee on Next percentage			5.00%
Employer Maximum Matching Contribution Percent Of Employee Salary Deferral			3.50%
Percentage of Employee salary deferral provision	100.00%
Pension plan [Member]
Pension and Employee Benefit Plans (Textual) [Abstract]
Net loss for the defined benefit pension plan to be amortized in next year	370,000
Prior service cost for the defined benefit pension plan to be amortized in next year	1,000
Estimated pension plan cash obligations payable in 2013	388,000
Estimated pension plan cash obligations payable in 2014	409,000
Estimated pension plan cash obligations payable in 2015	413,000
Estimated pension plan cash obligations payable in 2016	425,000
Estimated pension plan cash obligations payable in 2017	440,000
Estimated pension plan cash obligations payable in 2018 through 2022	2,521,000
Other Benefits [Member]
Pension and Employee Benefit Plans (Textual) [Abstract]
Net loss for the defined benefit pension plan to be amortized in next year	(14,000)
Estimated pension plan cash obligations payable in 2013	15,000
Estimated pension plan cash obligations payable in 2014	14,000
Estimated pension plan cash obligations payable in 2015	12,000
Estimated pension plan cash obligations payable in 2016	11,000
Estimated pension plan cash obligations payable in 2017	10,000
Estimated pension plan cash obligations payable in 2018 through 2022	$ 30,000
Equity Securities [Member]
Pension and Employee Benefit Plans (Textual) [Abstract]
Current Assets Mix percentage	70.00%
Assumed average annual returns	8.00%
Debt Securities [Member]
Pension and Employee Benefit Plans (Textual) [Abstract]
Current Assets Mix percentage	30.00%
Maximum [Member] | Debt Securities [Member]
Pension and Employee Benefit Plans (Textual) [Abstract]
Assumed average annual returns	6.00%
Minimum [Member] | Debt Securities [Member]
Pension and Employee Benefit Plans (Textual) [Abstract]
Assumed average annual returns	4.00%