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Accounts Receivable, net | 12 Months Ended
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Dec. 31, 2011
Accounts Receivable, net [Abstract] |
Accounts Receivable, net | 3. Accounts Receivable, net
|  | December 31, |
|  | 2011 |  |  | 2010 |
|  | (In Thousands) |
Trade receivables |  | $ | 87,303 |  |  | $ | 73,367 |
Other |  |  | 1,003 |  |  |  | 1,528 |
|  |  | 88,306 |  |  |  | 74,895 |
Allowance for doubtful accounts |  |  | (955 | ) |  |  | (636 | )
|  | $ | 87,351 |  |  | $ | 74,259 |
Our sales to contractors and independent sales representatives are generally subject to a mechanic’s lien in the Climate Control Business. Sales to other customers are generally unsecured. Credit is extended to customers based on an evaluation of the customer’s financial condition and other factors. Concentrations of credit risk with respect to trade receivables are monitored and this risk is reduced due to the large number of customers comprising our customer bases and their dispersion across many different industries and geographic areas (primarily as it relates to the Climate Control Business) and payment terms of 15 days or less relating to most of our significant customers in the Chemical Business, however, thirteen customers (including their affiliates), primarily relating to the Chemical Business, account for approximately 41% of our total net receivables at December 31, 2011.

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