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SIGNIFICANT ACCOUNTING POLICIES AND RECENT ACCOUNTING PRONOUNCEMENTS Significant Accounting Policies (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Employee Benefits Plan |  |  |
Defined Contribution Plan, Employer Discretionary Contribution Amount | $ 1.3 | $ 1.2 | $ 1.1
Foreign Exchange Transactions |  |  |
Foreign Currency Transaction Gain (Loss), before Tax | $ (0.1) | (0.1) | (0.1)
Warranty |  |  |
Product Warranty Period | 12 months |  |
Advertising Expense |  |  |
Advertising Expense | $ 1.2 | $ 1.3 | $ 1.3

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