XML 32 R61.htm IDEA: XBRL DOCUMENT v2.4.0.6
Retirement Benefit Plans (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Jun. 30, 2011
Dec. 31, 2007
Matching obligations, in connection with plans which are funded in cash and typically contributed to plans [Abstract]          
Defined contribution plan, recognized $ 8,100,000 $ 7,573,000 $ 3,523,000    
Multi-Employer Benefit Plans [Abstract]          
Pension plan withdrawal liability payable period         20 years
Pension plan withdrawal liability payable per year         300,000
Multiemployer plans, withdrawal liability       2,800,000  
Multiemployer plans, recorded gain       300,000  
Change in benefit obligation [Roll Forward]          
Benefit obligation at beginning of year 4,082,000 2,673,000      
Service cost 130,000 111,000 79,000    
Interest cost 186,000 181,000 133,000    
Actuarial loss (gain) 327,000 1,117,000      
Benefit obligation at end of year 4,725,000 4,082,000 2,673,000    
Unfunded status of the plans (4,725,000) (4,082,000)      
Amounts recognized in the balance sheet [Abstract]          
Accrued postretirement benefit liabilities 4,725,000 4,082,000      
Accumulated other comprehensive loss (pre-tax) related to [Abstract]          
Unrecognized net actuarial losses 1,510,000 1,444,000      
Unrecognized prior service cost (credit) 28,000 138,000      
Summary of defined benefit plan amounts were included in other comprehensive income [Abstract]          
Prior service cost (credit) included in accumulated other comprehensive income expected to be recognized in net periodic benefit cost during 2013 700,000        
Prior service cost (credit) expected to be amortized from accumulated other comprehensive income 430,000        
Defined benefit retirement plan [Abstract]          
Service cost 130,000 111,000 79,000    
Interest cost 186,000 181,000 133,000    
Amortization of prior service cost 110,000 111,000 110,000    
Amortization of unrecognized loss 261,000 173,000 25,000    
Total net periodic benefit costs 687,000 576,000 347,000    
Actuarial assumptions used to determine costs and benefit obligations [Abstract]          
Discount rate (in hundredths) 4.00% 4.55% 5.35%    
Salary increase (in hundredths) 4.00% 4.00% 4.00%    
Summary of defined benefit pension plan, the projected benefit obligation ("PBO"), accumulated benefit obligation ("ABO") and fair value of the plan's assets [Abstract]          
Projected benefit obligation 4,725,000 4,082,000      
Accumulated benefit obligation 4,601,000 3,662,000      
Fair value of plan assets 0 0      
Summary of expected future benefit payments [Abstract]          
2013 0        
2014 0        
2015 5,694,000        
2016 0        
2017 0        
Years 2018 - 2022 0        
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]          
Provision for expense in connection with ESOP 3,900,000 2,500,000 1,600,000    
Employee Stock Ownership Plan and Trust (ESOP) [Member]
          
Employee Stock Ownership Plan (ESOP) Disclosures [Line Items]          
Additional shares contributed to ESOP (in shares) 177,000        
Shares released from trust (in shares) 180,000        
Total remaining balance of shares in the ESOP (in shares) 930        
SERP Defined Benefit Plan [Member]
          
Matching obligations, in connection with plans which are funded in cash and typically contributed to plans [Abstract]          
Employer contributions during the period   505,000 247,000    
Defined contribution plan recorded liability 671,000        
Summary of defined benefit plan amounts were included in other comprehensive income [Abstract]          
Actuarial gains (losses) ,Incurred but Not Recognized 197,000        
Prior service (cost) credit, ,Incurred but Not Recognized 0        
Benefit plans, before reclassification adjustments, Incurred but Not Recognized 197,000        
Actuarial gains (losses), Reclassification Adjustment for Prior Period Amounts Recognized 157,000        
Prior service (cost) credit, Reclassification Adjustment for Prior Period Amounts Recognized 66,000        
Benefit plans, after reclassification adjustments, Reclassification Adjustment for Prior Period Amounts Recognized $ 223,000