Statements of Cash Flows (Unaudited) - USD ($)	3 Months Ended
	Jun. 30, 2016		Jun. 30, 2015
OPERATING ACTIVITIES
Net income	$ 3,132,545		$ 3,803,226
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	193,979		206,751
Excess tax benefits			(318,521)
Deferred income taxes	(77,021)		311,876
Changes in operating assets and liabilities:
Accounts receivable	(407,840)		(75,764)
Inventories	18,783		571,891
Prepaid expenses and other assets	32,657		(271,633)
Accounts payable and accrued expenses	1,296,142		944,896
Net cash provided by operating activities	4,189,245		5,172,722
INVESTING ACTIVITIES
Purchases of fixed assets	412		(23,057)
Purchases of marketable securities	(4,983,543)		136,978
Proceeds from maturities and sales of marketable securities			2,400,000
Net cash (used in) provided by investing activities	(4,983,131)		2,513,921
FINANCING ACTIVITIES
Proceeds from sale of common stock			262,749
Excess tax benefits			318,521
Repurchase of common stock			(556,787)
Payment of dividends to shareholders	(4,835,010)		(4,857,953)
Net cash used in financing activities	(4,835,010)		(4,833,470)
(Decrease) increase in cash and cash equivalents	(5,628,896)		2,853,173
Cash and cash equivalents at beginning of period	7,534,593	[1]	9,437,262
Cash and cash equivalents at end of period	1,905,697		12,290,435
Supplemental disclosures of cash flow information:
Cash paid during the quarter for income taxes

[1] The March 31, 2016 Balance Sheet is derived from the audited financial statements contained in our Annual Report on Form 10-K for the fiscal year ended March 31, 2016.