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SUBSEQUENT EVENT	12 Months Ended
	Dec. 31, 2012
Subsequent Events [Abstract]
Subsequent Events [Text Block]	16. SUBSEQUENT EVENT On February 4, 2013, the Company acquired certain assets of the tank and trailer business of Beall Corporation, a Portland, Oregon-based manufacturer of aluminum tank trailers and related equipment, for approximately $15 million in cash, subject to post-closing purchase price adjustments related to the acquired working capital. Beall Corporation began Chapter 11 reorganization proceedings in September of 2012, followed by a bankruptcy-court approved auction of its assets in December 2012. The Company was the winning bidder for certain assets of Beall’s tank and trailer business, including its Portland, Oregon manufacturing facility, as well as equipment, inventory, certain product designs, intellectual property and other related assets. The closing of the transaction is subject to customary closing conditions for a sale of this type, including the Bankruptcy Court for the District of Oregon entering a final order approving the acquisition by the Company pursuant to and in accordance with the definitive agreement.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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