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Accounts Receivable and Inventory by Reportable Segments (Details) - USD ($) $ in Thousands | Dec. 31, 2015 | Dec. 31, 2014
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Accounts Receivable |  |
Total accounts receivable | $ 57,188 | $ 51,494
Inventory |  |
Total inventory | 59,566 | 62,943
Total segment assets | 116,754 | 114,437
Laser Products |  |
Accounts Receivable |  |
Total accounts receivable | 21,763 | 24,083
Inventory |  |
Total inventory | 29,501 | 34,947
Vision Technologies |  |
Accounts Receivable |  |
Total accounts receivable | 21,691 | 18,922
Inventory |  |
Total inventory | 19,583 | 19,596
Precision Motion |  |
Accounts Receivable |  |
Total accounts receivable | 13,734 | 8,489
Inventory |  |
Total inventory | $ 10,482 | $ 8,400

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- Definition Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3-4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Subparagraph a(1) -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 4 -Article 5 + Details
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