Fair Value Measurements	3 Months Ended
	Jun. 30, 2011
Fair Value Measurements
Fair Value Measurements	NOTE 10. 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 debt securities that are classified as available-for-sale. On the balance sheets, available-for-sale securities are classified as "Marketable securities, short term" and "Marketable securities, long term." The fair value of our available-for-sale securities was $65,538,168 at June 30, 2011 and $61,227,498 at March 31, 2011.      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. We do not have any financial assets or liabilities being measured at fair value that are classified as Level 2 financial instruments.      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.