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Note 6 - Investment Securities Available for Sale | 6 Months Ended
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Sep. 30, 2016
Notes to Financial Statements |
Investments in Debt and Marketable Equity Securities (and Certain Trading Assets) Disclosure [Text Block] |
6. | Investment Securities Available For Sale
Investments in available-for-sale marketable securities at September 30, 2016 consisted of investments in publicly traded companies and had a fair value of $6,461,000, an aggregate cost basis of $7,617,000, gross unrealized gains aggregating $59,000 and gross unrealized losses aggregating $1,216,000. Marketable securities at March 31, 2016 consisted of investments with a fair value of $9,656,000, an aggregate cost basis of $9,791,000, gross unrealized gains aggregating $422,000 and gross unrealized losses aggregating $557,000. Securities that had been in a continuous loss position for less than 12 months as of September 30, 2016 had an aggregate fair value and unrealized loss of $247,000 and $44,000, respectively. The corresponding amounts at March 31, 2016 were $5,903,000 and $163,000. Securities that had been in a continuous loss position for more than 12 months as of September 30, 2016 had an aggregate fair value and unrealized loss of $3,934,000 and $1,172,000, respectively. The corresponding amounts at March 31, 2016 were $4,711,000 and $395,000. The Company realized gains of $573,000 and $0, respectively, from the sale of securities during the six -month periods ended September 30, 2016 and September 30, 2015. The marketable securities held by the Company as of September 30, 2016 and March 31, 2016 are classified as available-for-sale securities. The Company does not intend to liquidate marketable security holdings in Insignia Systems, Inc. (“Insignia”) within the next twelve months; as a result, the fair value of the Company ’s investment in Insignia is classified as non-current in the September 30, 2016 condensed consolidated balance sheet. The Company ’s investment in Insignia at September 30, 2016 had an aggregate cost basis of $5,106,000 and an unrealized loss of $1,172,000. Any investment with a fair value of less than its cost basis is assessed for possible “other-than-temporary” impairment regularly and at each reporting date. Other-than-temporary impairments of available-for-sale marketable equity securities are fully recognized in the consolidated statement of income (loss). On the basis of its June 30, 2016 assessment, the Company concluded that it had suffered an other-than-temporary impairment in its Insignia investment. In reaching this conclusion, management gave significant weight to the fact that, as of June 30, 2016, the Company’s investment in Insignia had been in a continuous unrealized loss position for well over one year and the magnitude of the unrealized loss had increased sharply during the quarter ended June 30, 2016. While management believes it is reasonably possible that the unrealized loss will reverse prior to the Company’s divestment of the security, management concluded that the weight of the evidence warranted the other-than-temporary impairment as of June 30, 2016. As such, the Company’s condensed consolidated statement of income (loss) for the three months ended June 30, 2016 and the six months ended September 30, 2016 includes a non-operating charge related to the Insignia securities of $1,502,000 . There was no other-than-temporary impairment charge for the three -month period ended September 30, 2016 or the six -month period ended September 30, 2015. All securities are priced using publicly quoted market prices and are considered Level 1 fair value measurements.

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