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Schedule II - Consolidated Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Allowance For Doubtful Accounts And Sales Allowances [Member] |  |  |
Valuation and Qualifying Accounts Roll Forward] |  |  |
Balance at beginning of year | $ 13,694 | $ 14,992 | $ 15,976
Additions charged to costs and expenses | 1,536 | 2,357 | 1,350
Deductions | (4,128) | (3,355) | (2,992)
Other changes | 1,302 | (300) | 658
Balance at end of year | 12,404 | 13,694 | 14,992
Reserve for inventory obsolescence [Member] |  |  |
Valuation and Qualifying Accounts Roll Forward] |  |  |
Balance at beginning of year | 38,879 | 43,452 | 41,967
Additions charged to costs and expenses | 8,616 | 8,621 | 11,360
Deductions | (9,049) | (11,833) | (9,696)
Other changes | (4,406) | (1,361) | (179)
Balance at end of year | $ 34,040 | $ 38,879 | $ 43,452

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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to accounts other than costs and expenses in a given period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24092-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 + Details
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