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REVENUE DISAGGREGATION OF REVENUE (Details) - USD ($) $ in Thousands | 3 Months Ended
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Mar. 31, 2020 | Mar. 31, 2019
Disaggregation of Revenue [Line Items] |  |
Net sales | $ 601,231 | $ 578,314
Defense |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 290,178 | 230,633
Commercial [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 311,053 | 347,681
Defense Aerospace [Member] | Defense |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 101,828 | 78,787
Defense Ground [Member] | Defense |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 22,657 | 20,758
Naval [Member] | Defense |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 165,693 | 131,088
Commercial Aerospace [Member] | Commercial [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 100,680 | 103,221
Power Generation [Member] | Commercial [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | 84,348 | 96,480
General Industrial [Member] | Commercial [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Net sales | $ 126,025 | $ 147,980
Transferred over Time [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Net Sales, Net, Percent | 52.00% | 48.00%
Transferred at Point in Time [Member] |  |
Disaggregation of Revenue [Line Items] |  |
Net Sales, Net, Percent | 48.00% | 52.00%

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- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130543-203045 + Details
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