Investments | As of March 31, 2016, we held certain investments that are required to be measured for disclosure purposes at fair value on a recurring basis. These investments are considered Level 2 investments and are all considered to be held-to-maturity securities. We consider as current assets those investments which will mature in the next 12 months. The remaining investments are considered non-current assets. The amortized cost and fair value of our investments, and the related gross unrealized gains and losses, were as follows as of March 31, 2016 (in thousands): Gross Unrealized Cost Gains Losses Fair Value Short-term Investments: Corporate bonds $ 39 $ -- $ -- $ 39 Long-term Investments Corporate bonds $ 5,210 $ 1 $ -- $ 5,211 The amortized cost and fair value of our investments, and the related gross unrealized gains and losses, were as follows as of December 31, 2015 (in thousands): Gross Unrealized Cost Gains Losses Fair Value Short-term Investments: Corporate bonds $ 44 $ -- $ -- $ 44 Long-term Investments Corporate bonds $ 5,555 $ -- $ (30 ) $ 5,525 The above long-term corporate bonds represent investments in two issuers at March 31, 2016. One of these bonds experienced a significant decline in market value resulting from a major economic decline in its industry. In the fourth quarter of 2015, we determined based upon disclosures by the issuer that, more likely than not, we would be required to sell or exchange the bond before recovery of its amortized cost. Therefore, we then recorded an impairment loss on this long-term corporate bond reducing the carrying value of the bond to its market value at December 31, 2015. In the first quarter of 2016, this corporate bond experienced further declines. Therefore, we recorded an impairment loss on this bond of $345,000 reducing the carrying value of the bond to its market value at March 31, 2016. This loss is reported as other income (expense) on our income statement. The investment in the other issuer has not been in a loss position since December 31, 2015. The total carrying value of these investments is reviewed quarterly for changes in circumstance or the occurrence of events that suggest our investment may not be recoverable. At March 31, 2016, the length of time until maturity of these securities ranged from 32 months to 43 months. The cost and fair value of our investments that are being accounted for as available-for-sale securities, and the related gross unrealized gain reflected in accumulated other comprehensive income, were as follows as of the dates shown below (in thousands): Gross Unrealized Cost Gains Losses Fair value As of March 31, 2016: Long-term Investments: Equity investments $ 5,552 $ 330 $ -- $ 5,882 Gross Unrealized Cost Gains Losses Fair value As of December 31, 2015: Long-term Investments: Equity investments $ 3,876 $ 435 $ -- $ 4,311 |