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Schedule II Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Valuation and Qualifying Accounts Disclosure |  |  |  |
Balance at beginning of year |  | $ 3,936 |  |
Balance at end of year |  | 3,615 | $ 3,936 |
Allowance for Doubtful Accounts and Returns |  |  |  |
Valuation and Qualifying Accounts Disclosure |  |  |  |
Balance at beginning of year |  | 3,936 | 4,526 | $ 4,399
Charged to costs and expenses |  | 1,087 | 999 | 1,279
Reclassification | [1] | 172 | 0 | 0
Charged to other accounts | [2] | (159) | (319) | (102)
Deductions | [3] | (1,421) | (1,270) | (1,254)
Balance at end of year |  | 3,615 | 3,936 | 4,526
Inventory Reserves |  |  |  |
Valuation and Qualifying Accounts Disclosure |  |  |  |
Balance at beginning of year |  | 3,272 | 3,250 | 3,724
Charged to costs and expenses |  | 1,728 | 622 | 1,044
Charged to other accounts | [2] | (160) | (194) | (88)
Deductions | [4] | (1,300) | (406) | (1,430)
Balance at end of year |  | 3,540 | 3,272 | 3,250
Valuation Allowance for Deferred Tax Assets |  |  |  |
Valuation and Qualifying Accounts Disclosure |  |  |  |
Balance at beginning of year |  | 5,699 | 7,243 | 4,719
Charged to costs and expenses |  | 734 | (636) | 2,239
Charged to other accounts | [2] | (549) | (908) | 285
Balance at end of year |  | $ 5,884 | $ 5,699 | $ 7,243
[1] | Includes amount reclassified from Other Current Liabilities to Allowance for Doubtful Accounts to properly classify a customer's open receivables balance.
[2] | Primarily includes impact from foreign currency fluctuations
[3] | Includes accounts determined to be uncollectible and charged against reserves, net of collections on accounts previously charged against reserves.
[4] | Includes inventory identified as excess, slow moving or obsolete and charged against reserves.

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- Definition Total of the adjustments in a given period to 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. + 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. + 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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