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INCOME TAXES (Details) (USD $)
 3 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Current [Abstract]        
Federal   $ 9,375,000 $ (3,136,000) $ 2,640,000
State   1,439,000 223,000 542,000
Current income tax expense (benefit)   10,814,000 (2,913,000) 3,182,000
Deferred [Abstract]        
Federal   (2,235,000) (7,002,000) (2,839,000)
State   26,000 (945,000) (114,000)
Deferred income tax expense (benefit)   (2,209,000) (7,947,000) (2,953,000)
Income tax expense (benefit)   8,605,000 (10,860,000) 229,000
Income tax charge in other comprehensive income       1,119,000
Effective income tax rate reconciliation [Abstract]        
Statutory rates applied to income (loss) before income taxes   8,231,000 1,565,000 3,036,000
State income taxes, net of Federal tax benefit   769,000 143,000 302,000
Net permanent differences   8,000 33,000 (25,000)
Change in deferred tax asset valuation allowance 14,100,000 (1,207,000) (14,121,000) (3,133,000)
Change in state credits   1,129,000 717,000 0
Change for net operating loss carrybacks, amended returns and related receivables   342,000 422,000 0
Change in deferred tax rate   (125,000) 274,000 0
Change in reserve for uncertain tax positions   (674,000) 42,000 16,000
Other   132,000 65,000 33,000
Income tax expense (benefit)   8,605,000 (10,860,000) 229,000
Deferred tax assets [Abstract]        
Accounts receivable related 578,000 578,000 573,000  
Net property and equipment 10,313,000 10,313,000 7,994,000  
Leases 5,608,000 5,608,000 4,737,000  
Accrued liabilities 655,000 655,000 140,000  
State tax credits 1,576,000 1,576,000 2,705,000  
Pensions 9,515,000 9,515,000 10,435,000  
Other 37,000 37,000 709,000  
Total deferred tax assets 28,282,000 28,282,000 27,293,000  
Deferred tax liabilities [Abstract]        
Inventory related 8,446,000 8,446,000 7,938,000  
Other 702,000 702,000 739,000  
Total deferred tax liabilities 9,148,000 9,148,000 8,677,000  
Valuation allowance (1,363,000) (1,363,000) (2,570,000)  
Net deferred tax assets 17,771,000 17,771,000 16,046,000  
Current assets (liabilities) [Abstract]        
Current deferred assets 5,060,000 5,060,000 3,331,000  
Current deferred liabilities (10,292,000) (10,292,000) (9,796,000)  
Valuation allowance (1,363,000) (1,363,000) (170,000)  
Deferred tax assets (liabilities), current (6,595,000) (6,595,000) (6,635,000)  
Non-current assets (liabilities) [Abstract]        
Non-current deferred assets 46,997,000 46,997,000 45,208,000  
Non-current deferred liabilities (22,631,000) (22,631,000) (20,127,000)  
Valuation allowance 0 0 (2,400,000)  
Deferred tax assets (liabilities) non current 24,366,000 24,366,000 22,681,000  
Net deferred tax assets 17,771,000 17,771,000 16,046,000  
Valuation allowance change in amount       2,014,000
Decrease in income tax expense related to valuation allowance evaluation       3,133,000
Charged to accumulated other comprehensive loss for the portion related to our pension plan       1,119,000
Reconciliation of unrecognized tax benefits [Roll Forward]        
Beginning balance   783,000 785,000 785,000
Gross increases - tax positions in prior period   0 38,000 0
Gross decreases - tax positions in prior period   0 (40,000) 0
Reductions related to settlements with taxing authorities and the lapse of the statue of limitations   (783,000) 0 0
Ending balance 0 0 783,000 785,000
Income tax penalties and accrued interest     $ 285,000