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Other Current Assets (Details) (USD $) In Thousands, unless otherwise specified | Apr. 04, 2015 | Jan. 03, 2015
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Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract] |  |
Royalty Receivable | $ 7,000 masi_RoyaltyReceivable | $ 7,200 masi_RoyaltyReceivable
Other Assets, Miscellaneous, Current | 6,986 us-gaap_OtherAssetsMiscellaneousCurrent | 4,070 us-gaap_OtherAssetsMiscellaneousCurrent
Prepaid Expense, Current | 9,197 us-gaap_PrepaidExpenseCurrent | 9,816 us-gaap_PrepaidExpenseCurrent
Due from Employees, Current | 377 us-gaap_DueFromEmployeesCurrent | 385 us-gaap_DueFromEmployeesCurrent
Other current assets | $ 23,560 us-gaap_OtherAssetsCurrent | $ 21,471 us-gaap_OtherAssetsCurrent

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- Definition Amounts due from an Entity employee, not to include stockholders or officers, which are usually due within 1 year (or 1 business cycle). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(k)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph k -Subparagraph 1 -Article 4 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3(a)(2)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39599-107864 + Details
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