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FINANCIAL INSTRUMENTS AND FAIR VALUE MEASUREMENTS (Assets and Liabilities) (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015
Accrued and other long term liabilities | LDS |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Contingent consideration | $ 6,800 |
Interest rate swap agreement | Other long-term liabilities |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Interest rate swap | $ 500 | $ 900
Level 3 |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Discount rate (as a percent) | 12.30% |
Recurring basis |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Assets | $ 7,923 | 27,031
Liabilities | 7,317 |
Recurring basis | Accrued and other long term liabilities |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Contingent consideration | 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 | 542 | 897
Recurring basis | Money market funds | Cash and cash equivalents |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Assets | 5,703 | 24,904
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 | 2,220 | 2,127
Recurring basis | Level 1 |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Assets | 7,923 | 27,031
Recurring basis | Level 1 | Money market funds | Cash and cash equivalents |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Assets | 5,703 | 24,904
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 | 2,220 | 2,127
Recurring basis | Level 2 |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Liabilities | 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 | 542 | $ 897
Recurring basis | Level 3 |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Liabilities | 6,775 |
Recurring basis | Level 3 | Accrued and other long term liabilities |  |
Assets and liabilities measured at fair value on a recurring basis |  |
Contingent consideration | $ 6,775 |

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