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FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Thousands | Sep. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Level 2 |  |
Fair value measurements |  |
Long-term debt, fair value | $ 118,900 | $ 32,900
Marketable securities, fair value | 2,000 |
Recurring basis | Total |  |
Fair value measurements |  |
Total assets measured at fair value | 23,634 | 76,640
Recurring basis | Certificate of deposit | Total |  |
Fair value measurements |  |
Certificates of deposit | 388 | 377
Recurring basis | Money market funds | Total |  |
Fair value measurements |  |
Investments, Fair Value Disclosure | 15,824 | 76,263
Recurring basis | Short Term Investments | Total |  |
Fair value measurements |  |
Investments, Fair Value Disclosure | 7,422 |
Recurring basis | Level 1 |  |
Fair value measurements |  |
Total assets measured at fair value | 15,824 | 76,263
Recurring basis | Level 1 | Money market funds |  |
Fair value measurements |  |
Investments, Fair Value Disclosure | 15,824 | 76,263
Recurring basis | Level 2 |  |
Fair value measurements |  |
Total assets measured at fair value | 7,810 | 377
Recurring basis | Level 2 | Certificate of deposit |  |
Fair value measurements |  |
Certificates of deposit | 388 | $ 377
Recurring basis | Level 2 | Short Term Investments |  |
Fair value measurements |  |
Investments, Fair Value Disclosure | $ 7,422 |

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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 + Details
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