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Acquisition (Assets Acquired and Liabilities Assumed) (Details) - USD ($) $ in Thousands | Nov. 01, 2016 | Dec. 31, 2016 | Sep. 30, 2016 | Dec. 31, 2015 | Sep. 30, 2015
--- | --- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |  |
Goodwill |  | $ 111,116 | $ 109,448 | $ 110,244 | $ 100,183
FreshTemp |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Cash | $ 1,690 |  |  |  |
Purchase price payable upon completion of diligence matters | 310 |  |  |  |
Fair value of contingent consideration on acquired business | 1,300 |  |  |  |
Total purchase price consideration | 3,300 |  |  |  |
Fair value of net tangible assets acquired | (37) |  |  |  |
Goodwill | 2,737 |  |  |  |
Total assets acquired and liabilities assumed | 3,300 |  |  |  |
Purchased and Core Technology | FreshTemp |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Fair value of identifiable intangible assets acquired | 350 |  |  |  |
Customer Relationships | FreshTemp |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |
Fair value of identifiable intangible assets acquired | $ 250 |  |  |  |

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- Definition Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6578-128477 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 30 -Section 30 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6911251&loc=d3e6613-128477 + Details
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