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Fair Value Measurements
3 Months Ended
Jun. 30, 2013
Fair Value Measurements [Abstract]  
Fair Value Measurements

NOTE 9. FAIR VALUE MEASUREMENTS
     Generally accepted accounting principles establish a framework for measuring fair value, provide a definition of fair value and prescribe required disclosures about fair-value measurements. Generally accepted accounting principles define fair value as the price that would be received to sell an asset or paid to transfer a liability. Fair value is a market-based measurement that should be determined using assumptions that market participants would use in pricing an asset or liability. Generally accepted accounting principles utilize a valuation hierarchy for disclosure of fair value measurements. The categorization within the valuation hierarchy is based on the lowest level of input that is significant to the fair value measurement. The categories within the valuation hierarchy are described as follows:

     Level 1 – Financial instruments with quoted prices in active markets for identical assets or liabilities. Our Level 1 financial instruments consist of publicly-traded marketable corporate debt securities, which are classified as available-for-sale. On the balance sheets, these securities are included in "Marketable securities, short term" and "Marketable securities, long term." The fair value of our Level 1 marketable securities was $79,734,874 at June 30, 2013 and $75,298,160 at March 31, 2013.

     Level 2 – Financial instruments with quoted prices in active markets for similar assets or liabilities. Level 2 fair value measurements are determined using either prices for similar instruments or inputs that are either directly or indirectly observable, such as interest rates. Our Level 2 financial instruments consist of municipal debt securities, which are classified as available-for-sale. On the balance sheets, these securities are included in "Marketable securities, short term" and "Marketable securities, long term." The fair value of our Level 2 marketable securities was $5,530,919 at June 30, 2013 and $7,453,126 at March 31, 2013.

     Level 3 – Inputs to the fair value measurement are unobservable inputs or valuation techniques. We do not have any financial assets or liabilities being measured at fair value that are classified as Level 3 financial instruments.