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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Assets and Liabilities) (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016
Interest rate swap agreement | Other long-term liabilities |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Interest rate swap | $ 300 | $ 500
Recurring basis |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Assets | 22,879 | 7,923
Liabilities | 7,109 | 7,317
Recurring basis | Accrued and other long term liabilities |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Contingent consideration | 6,790 | 6,775
Recurring basis | Interest rate swap agreement | Other long-term liabilities |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Interest rate swap | 319 | 542
Recurring basis | Money market funds | Cash and cash equivalents |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Assets | 20,608 | 5,703
Recurring basis | Voluntary Savings Plan - mutual funds held in trust | Other long-term assets |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Assets | 2,271 | 2,220
Recurring basis | Level 1 |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Assets | 22,879 | 7,923
Recurring basis | Level 1 | Money market funds | Cash and cash equivalents |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Assets | 20,608 | 5,703
Recurring basis | Level 1 | Voluntary Savings Plan - mutual funds held in trust | Other long-term assets |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Assets | 2,271 | 2,220
Recurring basis | Level 2 |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Liabilities | 319 | 542
Recurring basis | Level 2 | Interest rate swap agreement | Other long-term liabilities |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Interest rate swap | 319 | 542
Recurring basis | Level 3 |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Liabilities | $ 6,790 | 6,775
Recurring basis | Level 3 | LDS |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Discount rate (as a percent) | 12.30% |
Recurring basis | Level 3 | Accrued and other long term liabilities |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Contingent consideration | $ 6,790 | $ 6,775

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