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EMPLOYEE BENEFIT PLANS (Details 2) (USD $)
12 Months Ended
Dec. 31, 2012
item
Dec. 31, 2011
Dec. 31, 2010
Plan's asset allocations by asset category      
Weighted-average asset allocations by asset category (as a percent) 100.00% 100.00%  
Assets at fair value $ 12,078,000 $ 9,525,000 $ 9,034,000
Future benefit payments that reflect expected future service, as appropriate, expected to be paid:      
2013 585,000    
2014 633,000    
2015 644,000    
2016 673,000    
2017 701,000    
Thereafter 4,537,000    
Total 7,773,000    
401(k) Savings Plan      
Vesting period regarding employer contribution 5 years    
Contribution expense 118,000 101,000 117,000
Deferred Compensation Plan      
Period for which the Company will make payments under the Deferred Compensation Plan P10Y    
Threshold age of employees under the plan for company to make payments 65    
Expenses incurred related to the plan 84,000 114,000 254,000
Benefits paid under the plan 140,000 160,000 160,000
Minimum
     
Expected minimum contribution to Pension Plan in next fiscal year      
Expected contribution to Pension Plan in 2013 400,000    
Level I
     
Plan's asset allocations by asset category      
Assets at fair value 12,078,000 9,525,000  
Total
     
Plan's asset allocations by asset category      
Assets at fair value 12,078,000 9,525,000  
Cash
     
Plan's asset allocations by asset category      
Weighted-average asset allocations by asset category (as a percent) 2.27% 3.24%  
Target allocation (as a percent) 2.50%    
Equity securities
     
Plan's asset allocations by asset category      
Weighted-average asset allocations by asset category (as a percent) 67.49% 60.46%  
Target allocation (as a percent) 60.00%    
Cash and cash equivalents | Level I
     
Plan's asset allocations by asset category      
Assets at fair value 274,000 304,000  
Cash and cash equivalents | Total
     
Plan's asset allocations by asset category      
Assets at fair value 274,000 304,000  
Mutual funds - taxable fixed income
     
Plan's asset allocations by asset category      
Weighted-average asset allocations by asset category (as a percent) 30.24% 36.30%  
Target allocation (as a percent) 37.50%    
Mutual funds - taxable fixed income | Level I
     
Plan's asset allocations by asset category      
Assets at fair value 3,653,000 3,451,000  
Mutual funds - taxable fixed income | Total
     
Plan's asset allocations by asset category      
Assets at fair value 3,653,000 3,451,000  
Mutual funds - domestic equity | Level I
     
Plan's asset allocations by asset category      
Assets at fair value 5,321,000 4,432,000  
Mutual funds - domestic equity | Total
     
Plan's asset allocations by asset category      
Assets at fair value 5,321,000 4,432,000  
Mutual funds - international equity | Level I
     
Plan's asset allocations by asset category      
Assets at fair value 2,830,000 1,338,000  
Mutual funds - international equity | Total
     
Plan's asset allocations by asset category      
Assets at fair value $ 2,830,000 $ 1,338,000