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INVESTMENTS HELD-TO-MATURITY	9 Months Ended
INVESTMENTS HELD-TO-MATURITY	Sep. 30, 2019
Investments [Abstract]
INVESTMENTS HELD-TO-MATURITY	INVESTMENTS HELD-TO-MATURITY We classify investments as held-to-maturity when we have the positive intent and ability to hold the securities to maturity. During the nine months ended September 30, 2019, we invested in commercial papers that were classified as investments held-to-maturity. As of September 30, 2019, all investments have matured. We did not recognize an other-than-temporary impairment or comprehensive gain or loss for the three and nine months ended September 30, 2019. We recorded interest and investment income of $42,000 and $177,000 for the three months ended September 30, 2019 and 2018, respectively, and $220,000 and $323,000 for the nine months ended September 30, 2019 and 2018, respectively, associated with our cash and investment accounts.