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Business Realignment and Corporate Headquarter Relocation (Schedule of Business Realignment Charges Classified by Statement of Operations) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total business realignment charges | $ 323 | $ 309 | $ 494 | $ 2,211
Cost of Goods Sold [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total business realignment charges | 304 | 108 | 394 | 287
Design and Development [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total business realignment charges |  | 41 |  | 1,100
Selling, General and Administrative Expenses [Member] |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Total business realignment charges | $ 19 | $ 160 | $ 100 | $ 824

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- Definition Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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