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INVESTMENTS HELD-TO-MATURITY	3 Months Ended
INVESTMENTS HELD-TO-MATURITY	Mar. 31, 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 three months ended March 31, 2019, we invested in commercial papers that were classified as investments held-to-maturity. As of March 31, 2019, both amortized cost value and fair value were $6.5 million with zero unrealized gain or loss. Remaining commercial papers in the amounts of $2.5 million, $1.5 million, $1.5 million and $1.0 million mature in April, May, June and August of 2019, respectively. We did not recognize an other-than-temporary impairment or comprehensive gain or loss for the three months ended March 31, 2019. We recorded interest and investment income of $106,000 and $48,000 for the three months ended March 31, 2019 and 2018, respectively, associated with our cash and investment accounts.