Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Sep. 30, 2015		Sep. 30, 2014
OPERATING ACTIVITIES
Net income	$ 7,114,021		$ 7,912,732
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation	414,634		464,517
Stock-based compensation	21,160		58,960
Excess tax benefits	(352,294)		(24,288)
Deferred income taxes	340,608		138,992
Changes in operating assets and liabilities:
Accounts receivable	181,006		(1,346,822)
Inventories	594,624		(182,060)
Prepaid expenses and other assets	(60,410)		(32,252)
Accounts payable and accrued expenses	(412,767)		10,587
Net cash provided by operating activities	7,840,582		7,000,366
INVESTING ACTIVITIES
Purchases of fixed assets	(146,505)		(27,710)
Purchases of marketable securities	266,240		(9,280,445)
Proceeds from maturities and sales of marketable securities	6,250,000		4,000,000
Net cash provided by (used in) investing activities	6,369,735		(5,308,155)
FINANCING ACTIVITIES
Proceeds from sale of common stock	292,909		302,701
Excess tax benefits	352,294		$ 24,288
Repurchase of common stock	(1,851,290)
Payment of dividends to shareholders	(9,725,174)
Net cash (used in) provided by financing activities	(10,931,261)		$ 326,989
Increase in cash and cash equivalents	3,279,056		2,019,200
Cash and cash equivalents at beginning of period	9,437,262	[1]	1,262,300
Cash and cash equivalents at end of period	12,716,318		3,281,500
Supplemental disclosures of cash flow information:
Cash paid during the quarter for income taxes	$ 3,240,000		$ 3,760,500

[1] The March 31, 2015 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, 2015.