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Related Party Transactions (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
Dec. 31, 2010
Related Party Transactions          
Percentage of total purchases from Carrier Corporation and its affiliates 48.00% 54.00% 45.00% 54.00%  
Amount payable to Carrier Corporation and its affiliates, net of receivables $ 191,000   $ 191,000   $ 93,000
Revenues from sales to Carrier Corporation and its affiliates 7,693 14,649 11,797 18,048  
Fees related to Transactional Services Agreements with Carrier Corporation $ 148 $ 888 $ 148 $ 2,227