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Medium-Duty Gmc Truck Franchises	12 Months Ended
	Dec. 31, 2011
Medium-Duty GMC Truck Franchises [Abstract]
MEDIUM-DUTY GMC TRUCK FRANCHISES	17. MEDIUM-DUTY GMC TRUCK FRANCHISES: During the second quarter of 2009, General Motors made the decision to terminate its medium-duty GMC truck production and wind-down the Company’s medium-duty GMC truck franchises, which forced the Company to take a $6.7 million pre-tax asset impairment charge. The impairment charge was offset by $1.8 million in assistance from General Motors. In the second quarter of 2009, this impairment charge resulted in a net charge to cost of sales of $4.0 million, a net charge to SG&A expense of $0.1 million and a charge to amortization expense of $0.8 million. During the third and fourth quarters of 2009, the Company adjusted the estimated impairment charge related to the medium-duty GMC truck and parts inventories, which resulted in a net credit to cost of sales of $1.9 million.

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- Definition

The entire disclosure for the details of the charge against earnings resulting from the aggregate write down of all assets from their carrying value to their fair value. Disclosure may also include a description of the impaired asset and facts and circumstances leading to the impairment, amount of the impairment loss and where the loss is located in the income statement, method(s) for determining fair value, and the segment in which the impaired asset is reported.

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