FAIR VALUE (Tables)
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9 Months Ended |
Sep. 30, 2016 |
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| Fair Value Disclosures [Abstract] |
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| Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis |
The following is a listing of our assets and liabilities required to be measured at fair value on a recurring basis and where they are classified within the hierarchy as of September 30, 2016, and December 31, 2015 (in thousands): | | | | | | | | | | | | | | | | | | | | | | Fair Value at Reporting Date Using | | | September 30, 2016 | | Quoted Prices in Active Markets for Identical Assets or Liabilities
(Level 1) | | Significant Observable Inputs
(Level 2) | | Significant Unobservable Inputs
(Level 3) | Investments | | | | | | | | | Corporate bonds | | $ | 3,900 |
| | $ | — |
| | $ | 3,900 |
| | $ | — |
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| | | | | | | | | | | | | | | | | | | | | | Fair Value at Reporting Date Using | | | December 31, 2015 | | Quoted Prices in Active Markets for Identical Assets or Liabilities
(Level 1) | | Significant Observable Inputs
(Level 2) | | Significant Unobservable Inputs
(Level 3) | Investments | | | | | | | | | Corporate bonds | | $ | 53,317 |
| | $ | — |
| | $ | 53,317 |
| | $ | — |
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| Fair Value, by Balance Sheet Grouping |
The carrying values and estimated fair values of our financial instruments as of September 30, 2016, and December 31, 2015, were as follows (in thousands): | | | | | | | | | | | | | | | | | | | | September 30, 2016 | | December 31, 2015 | | | Carrying Value | | Fair Value | | Carrying Value | | Fair Value | Senior notes | | $ | 150,000 |
| | $ | 133,000 |
| | $ | 150,000 |
| | $ | 138,000 |
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