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EMPLOYEE BENEFIT PLANS (Details) (USD $)
12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
EMPLOYEE BENEFIT PLANS [Abstract]      
Employer discretionary contribution to 401 (k) plan $ 30,000 $ 18,000  
Amounts recognized in accumulated other comprehensive loss consists of [Abstract]      
Total (560,000) (620,000) 305,000
Expected future benefit payments [Abstract]      
Employer contribution to 401 (k) defined contribution plan 245,000 230,000 226,000
Weighted Average Market Price [Roll Forward]      
Share-based compensation expense 201,000 209,000 205,000
Restricted Stock [Member]
     
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of shares authorized (in shares) 100,000    
Number of shares available for grant (in shares) 70,783    
Shares [Roll Forward]      
Outstanding, beginning of year (in shares) 9,921 11,241  
Granted (in shares) 4,132 4,268  
Vested (in shares) (5,407) (5,588)  
Outstanding, end of year (in shares) 8,646 9,921 11,241
Weighted Average Market Price [Roll Forward]      
Outstanding, beginning of year (in dollars per share) $ 29.37 $ 22.79  
Granted (in dollars per share) $ 37.68 $ 37.16  
Vested (in dollars per share) $ 25.92 $ 22.08  
Outstanding, end of year (in dollars per share) $ 35.51 $ 29.37 $ 22.79
Share-based compensation expense 141,000 145,000 127,000
Directors [Member]
     
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]      
Deferred interest expense 16,000 22,000 28,000
Corporate Bonds [Member]
     
Target Allocations of Assets [Abstract]      
Target plan asset allocations range minimum (in hundredths) 30.00%    
Target plan asset allocations range maximum (in hundredths) 50.00%    
Pension Plan [Member]
     
Change in benefit obligation [Roll Forward]      
Benefit obligation at beginning of year 8,387,000 7,637,000  
Service cost 330,000 328,000 303,000
Interest cost 344,000 402,000 399,000
Actuarial gain 1,207,000 425,000  
Benefits paid (251,000) (405,000)  
Benefit obligation at end of period 10,017,000 8,387,000 7,637,000
Change in plan assets [Roll Forward]      
Fair value of plan assets at beginning of period 7,472,000 7,337,000  
Actual return on plan assets 790,000 35,000  
Employer contributions 750,000 505,000  
Benefits paid (251,000) (405,000)  
Fair value of plan assets at end of period 8,761,000 7,472,000 7,337,000
Funded status (1,256,000) (915,000)  
Amounts recognized in accumulated other comprehensive loss consists of [Abstract]      
Net loss 3,375,000 2,570,000  
Prior service cost (357,000) (400,000)  
Total 3,018,000 2,170,000  
Accumulated benefit obligation in excess of plan assets [Abstract]      
Projected benefit obligation 10,017,000    
Accumulated benefit obligation 10,017,000    
Fair value of plan assets 8,761,000    
Components of net periodic benefit cost [Abstract]      
Service cost 330,000 328,000 303,000
Interest cost 344,000 402,000 399,000
Expected return on plan assets (565,000) (595,000) (523,000)
Net amortization and deferral 135,000 46,000 44,000
Net periodic benefit cost 244,000 181,000 223,000
Amounts that will be amortized from accumulated other comprehensive loss into the net periodic benefit cost in 2013, related to estimated net loss 223,859    
Amounts that will be amortized from accumulated other comprehensive loss into the net periodic benefit cost in 2013 related to prior service cost (benefit) (43,000)    
Weighted-average assumptions used to determine benefit obligations [Abstract]      
Discount rate (in hundredths) 3.30% 4.00%  
Rate of compensation increase (in hundredths) 3.00% 3.00%  
Weighted-average assumptions used to determine net periodic benefit cost [Abstract]      
Discount rate (in hundredths) 4.00% 5.25% 5.75%
Expected long-term return on plan assets (in hundredths) 7.50% 8.00% 8.00%
Rate of compensation increase (in hundredths) 3.00% 3.00% 3.25%
Plan assets at fair value [Abstract]      
Fair value of plan assets 8,761,000 7,472,000 7,337,000
Allocation (in hundredths) 100.00% 100.00%  
Expected employer contribution to pension plan 500,000    
Expected future benefit payments [Abstract]      
2013 326,000    
2014 636,000    
2015 306,000    
2016 570,000    
2017 516,000    
2018-2022 4,037,000    
Pension Plan [Member] | Level I [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 6,704,000 5,113,000  
Plan assets at fair value [Abstract]      
Fair value of plan assets 6,704,000 5,113,000  
Pension Plan [Member] | Level II [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 2,057,000 2,359,000  
Plan assets at fair value [Abstract]      
Fair value of plan assets 2,057,000 2,359,000  
Pension Plan [Member] | Level III [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 0 0  
Plan assets at fair value [Abstract]      
Fair value of plan assets 0 0  
Pension Plan [Member] | Cash and Cash Equivalents [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 525,000 208,000  
Plan assets at fair value [Abstract]      
Fair value of plan assets 525,000 208,000  
Allocation (in hundredths) 6.00% 2.80%  
Pension Plan [Member] | Cash and Cash Equivalents [Member] | Level I [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 525,000 208,000  
Plan assets at fair value [Abstract]      
Fair value of plan assets 525,000 208,000  
Pension Plan [Member] | Cash and Cash Equivalents [Member] | Level II [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 0 0  
Plan assets at fair value [Abstract]      
Fair value of plan assets 0 0  
Pension Plan [Member] | Cash and Cash Equivalents [Member] | Level III [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 0 0  
Plan assets at fair value [Abstract]      
Fair value of plan assets 0 0  
Pension Plan [Member] | Equity Securities U.S. Companies [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at beginning of period 2,958,000    
Fair value of plan assets at end of period 3,121,000    
Target Allocations of Assets [Abstract]      
Target plan asset allocations range minimum (in hundredths) 50.00%    
Target plan asset allocations range maximum (in hundredths) 70.00%    
Plan assets at fair value [Abstract]      
Fair value of plan assets 3,121,000    
Allocation (in hundredths) 35.60% 39.60%  
Pension Plan [Member] | Equity Securities U.S. Companies [Member] | Level I [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 3,121,000 2,958,000  
Plan assets at fair value [Abstract]      
Fair value of plan assets 3,121,000 2,958,000  
Pension Plan [Member] | Equity Securities U.S. Companies [Member] | Level II [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 0 0  
Plan assets at fair value [Abstract]      
Fair value of plan assets 0 0  
Pension Plan [Member] | Equity Securities U.S. Companies [Member] | Level III [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 0 0  
Plan assets at fair value [Abstract]      
Fair value of plan assets 0 0  
Pension Plan [Member] | Mutual Funds and ETF's [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 3,058,000 [1] 1,797,000 [1]  
Plan assets at fair value [Abstract]      
Fair value of plan assets 3,058,000 [1] 1,797,000 [1]  
Allocation (in hundredths) 34.90% [1] 24.00% [1]  
Pension Plan [Member] | Mutual Funds and ETF's [Member] | Level I [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 3,058,000 [1] 1,797,000 [1]  
Plan assets at fair value [Abstract]      
Fair value of plan assets 3,058,000 [1] 1,797,000 [1]  
Pension Plan [Member] | Mutual Funds and ETF's [Member] | Level II [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 0 [1] 0 [1]  
Plan assets at fair value [Abstract]      
Fair value of plan assets 0 [1] 0 [1]  
Pension Plan [Member] | Mutual Funds and ETF's [Member] | Level III [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 0 [1] 0 [1]  
Plan assets at fair value [Abstract]      
Fair value of plan assets 0 [1] 0 [1]  
Pension Plan [Member] | Corporate Bonds [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 1,149,000 1,273,000  
Plan assets at fair value [Abstract]      
Fair value of plan assets 1,149,000 1,273,000  
Allocation (in hundredths) 13.10% 17.00%  
Pension Plan [Member] | Corporate Bonds [Member] | Level I [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 0 0  
Plan assets at fair value [Abstract]      
Fair value of plan assets 0 0  
Pension Plan [Member] | Corporate Bonds [Member] | Level II [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 1,149,000 1,273,000  
Plan assets at fair value [Abstract]      
Fair value of plan assets 1,149,000 1,273,000  
Pension Plan [Member] | Corporate Bonds [Member] | Level III [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 0 0  
Plan assets at fair value [Abstract]      
Fair value of plan assets 0 0  
Pension Plan [Member] | U.S. Agency securities [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 908,000 1,086,000  
Plan assets at fair value [Abstract]      
Fair value of plan assets 908,000 1,086,000  
Allocation (in hundredths) 10.40% 14.50%  
Pension Plan [Member] | U.S. Agency securities [Member] | Level I [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 0 0  
Plan assets at fair value [Abstract]      
Fair value of plan assets 0 0  
Pension Plan [Member] | U.S. Agency securities [Member] | Level II [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 908,000 1,086,000  
Plan assets at fair value [Abstract]      
Fair value of plan assets 908,000 1,086,000  
Pension Plan [Member] | U.S. Agency securities [Member] | Level III [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 0 0  
Plan assets at fair value [Abstract]      
Fair value of plan assets 0 0  
Pension Plan [Member] | Certificate of Deposit [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period   150,000  
Plan assets at fair value [Abstract]      
Fair value of plan assets   150,000  
Allocation (in hundredths)   2.10%  
Pension Plan [Member] | Certificate of Deposit [Member] | Level I [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period   150,000  
Plan assets at fair value [Abstract]      
Fair value of plan assets   150,000  
Pension Plan [Member] | Certificate of Deposit [Member] | Level II [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period   0  
Plan assets at fair value [Abstract]      
Fair value of plan assets   0  
Pension Plan [Member] | Certificate of Deposit [Member] | Level III [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period   0  
Plan assets at fair value [Abstract]      
Fair value of plan assets   0  
Pension Plan [Member] | Common Stock [Member]
     
Change in plan assets [Roll Forward]      
Fair value of plan assets at end of period 436,000 346,000  
Plan assets at fair value [Abstract]      
Fair value of plan assets 436,000 346,000  
Allocation (in hundredths) 5.00% 4.60%  
Supplemental Executive Retirement Plans [Member]
     
Expected future benefit payments [Abstract]      
Obligation included in other liabilities 901,000 809,000  
Cost recognized 92,000 62,000 348,000
Deferred Compensation Plan [Member]
     
Expected future benefit payments [Abstract]      
Obligation included in other liabilities $ 1,001,000 $ 1,030,000  
[1] This category comprises mutual funds investing in domestic large-cap, mid-caps, small caps, international large cap, emerging markets and commodities.