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PRODUCT WARRANTY COSTS (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Changes in the carrying amount of product warranty accruals |  |  |  |
Balance at beginning of year |  | $ 21,053 | $ 19,469 | $ 15,579
Accruals for warranties |  | 9,901 | 13,058 | 19,824
Settlements |  | (11,500) | (11,434) | (15,458)
Standard And Extended Product Warranty Accrual Foreign Currency Translation Gain (Loss) and Other Adjustments | [1] | 2,575 | (40) | (476)
Balance at end of year |  | 22,029 | $ 21,053 | $ 19,469
Air Liquide Welding [Member] |  |  |  |
Changes in the carrying amount of product warranty accruals |  |  |  |
Product Warranty Accrual Additions From Business Acquisition |  | $ 2,299 |  |
[1] | At December 31, 2017, Foreign currency translation and other adjustments includes $2,299 in an acquired liability related to the Air Liquide Welding acquisition as discussed in Note 3 to the consolidated financial statements.

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- Definition Amount of foreign currency translation gain (loss) and other adjustments which decreases (increases) the standard and extended product warranty accrual. + References No definition available. + Details
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- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (c)(5) -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.15(5)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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- Definition Amount of increase in the standard and extended product warranty accrual from warranties issued. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph ((c)(3)) -URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249 + Details
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