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COMMITMENTS AND CONTINGENCIES (Details) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2017 USD ($) Area Seller | Sep. 30, 2016 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2012 USD ($) | Dec. 31, 2011 USD ($) | Dec. 31, 2010 USD ($) | Dec. 31, 2009 USD ($) | Dec. 31, 2008 USD ($) | Dec. 31, 2007 USD ($) | Dec. 31, 2006 USD ($) | Dec. 31, 2005 USD ($) | Dec. 31, 2004 USD ($)
COMMITMENTS AND CONTINGENCIES [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Rent expense charged to operations | $ 2,496 | $ 2,347 |  |  |  |  |  |  |  |  |  |  |  |  |
Future minimum rental payments required under all non-cancelable operating leases [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
October 1, 2017 to December 31, 2017 | 1,362 |  |  |  |  |  |  |  |  |  |  |  |  |  |
2018 | 2,500 |  |  |  |  |  |  |  |  |  |  |  |  |  |
2019 | 2,118 |  |  |  |  |  |  |  |  |  |  |  |  |  |
2020 | 1,777 |  |  |  |  |  |  |  |  |  |  |  |  |  |
2021 | 1,204 |  |  |  |  |  |  |  |  |  |  |  |  |  |
2022 | 1,319 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Thereafter | 5,943 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total minimum lease payments | 16,223 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Slate Hill, New York Site [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Site Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Annual monitoring costs | $ 5 |  | $ 5 | $ 5 | $ 5 | $ 5 | $ 5 | $ 5 | $ 5 | $ 5 | $ 5 | $ 5 | $ 5 | $ 5 | $ 5
Verona, Missouri Facility [Member] | Dioxin Contamination [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Site Contingency [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of areas of the site in which capping of areas of residual contamination was performed | Area | 4 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of sellers who have the benefit of certain contractual indemnification by the prior owner | Seller | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |

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- Definition The number of relatively small areas of the site separate from the manufacturing facilities in which capping of areas of residual contamination was performed. + References No definition available. + Details
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- Definition The number of sellers that indemnified the company under an asset purchase agreement covering the company's acquisition of the facility for potential liabilities associated with the site and who, in turn, have the benefit of certain contractual indemnification by the prior owner that is implementing the remediation activities at the site. + References No definition available. + Details
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- Definition Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the sixth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References No definition available. + Details
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