Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]	Total
Balance (in shares) at Mar. 31, 2014	2,355,028
Balance at Mar. 31, 2014	$ 588,756	$ 4,855,093	$ 21,923,989	$ (7,780)	$ 27,360,058
Net income			$ 1,891,103		1,891,103
Unrealized loss from marketable securities				$ (82,687)	(82,687)
Repurchase of stock options		$ (112,935)			(112,935)
Compensation expense related to stock options		8,958			8,958
Balance (in shares) at Sep. 30, 2014	2,355,028
Balance at Sep. 30, 2014	$ 588,756	4,751,116	$ 23,815,092	$ (90,467)	29,064,497
Balance (in shares) at Mar. 31, 2015	2,372,527
Balance at Mar. 31, 2015	$ 593,131	$ 4,929,090	24,407,915	$ (134,913)	29,795,223	[1]
Net income			$ 3,057,920		3,057,920
Unrealized loss from marketable securities				$ (554,515)	(554,515)
Balance (in shares) at Sep. 30, 2015	2,372,527
Balance at Sep. 30, 2015	$ 593,131	$ 4,929,090	$ 27,465,835	$ (689,428)	$ 32,298,628

[1] Derived from audited financial statements