Annual report pursuant to Section 13 and 15(d)

EMPLOYEE BENEFIT PLANS (Details)

v2.4.0.6
EMPLOYEE BENEFIT PLANS (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
EMPLOYEE BENEFIT PLANS      
Period based on which benefits are based on the highest average compensation during last ten years 5 years    
EMPLOYEE BENEFIT PLANS      
Amount paid by plan $ 17,359,000 $ 8,793,000  
CHANGE IN ACCUMULATED BENEFIT OBLIGATION      
Accumulated Benefit obligation at beginning of year 196,911,000 183,972,000  
Service cost 100,000 158,000 86,000
Interest cost 9,622,000 9,879,000  
Actuarial (gain) loss 21,541,000 12,205,000  
Benefits paid (17,359,000) (8,793,000)  
Liability gain due to curtailment   (510,000)  
Accumulated Benefit obligation at end of year 210,815,000 196,911,000 183,972,000
Non-cash (increases) decreases in the minimum pension liability (15,400,000) (24,500,000) (1,900,000)
CHANGE IN PLAN ASSETS      
Market value of plan assets at beginning of year 165,044,000 171,457,000  
Actual return on plan assets 14,656,000 (2,520,000)  
Employer contribution 5,203,000 4,900,000 5,200,000
Benefits paid (17,359,000) (8,793,000)  
Fair value of plan assets at end of year 167,544,000 165,044,000 171,457,000
Funded status (43,271,000) (31,867,000)  
Amounts recognized in the statement of financial position      
Noncurrent liabilities (43,271,000) (31,867,000)  
Amounts recognized in accumulated other comprehensive income      
Net actuarial loss 102,419,000 87,035,000  
ACCUMULATED BENEFIT OBLIGATION      
Discount rate (as a percent) 4.17% 5.01% 5.51%
NET BENEFIT COST      
Discount rate (as a percent) 5.01% 5.51% 6.01%
Expected return on plan assets (as a percent) 7.00% 7.00% 7.00%
Components of net periodic pension benefit Gain      
Service cost 100,000 158,000 86,000
Interest cost 9,622,000 9,879,000 9,514,000
Expected return on plan assets (12,106,000) (12,080,000) (11,437,000)
Amortization of net loss 3,606,000 1,800,000 1,115,000
Net periodic loss/(benefit) 1,222,000 (243,000) (722,000)
Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income      
Pretax loss 18,991,000 26,297,000 3,048,000
Amortization of net loss (3,606,000) (1,800,000) (1,115,000)
Total recognized in other comprehensive income 15,385,000 24,497,000 1,933,000
Total recognized in net periodic benefit cost and other comprehensive income 16,607,000 24,254,000 1,211,000
Retirement Income Plan
      
EMPLOYEE BENEFIT PLANS      
Amount paid by plan 4,700,000    
CHANGE IN ACCUMULATED BENEFIT OBLIGATION      
Benefits paid (4,700,000)    
CHANGE IN PLAN ASSETS      
Benefits paid (4,700,000)    
Retirement Income Plan | Maximum
      
EMPLOYEE BENEFIT PLANS      
Single-sum payment for the ability to elect for a limited time the commencement of benefit 13,500    
Waltham Services, LLC Salaried Pension Plan
      
EMPLOYEE BENEFIT PLANS      
Amount disbursed to terminate the plan $ 4,000,000