CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (USD $)	3 Months Ended		6 Months Ended
	Jan. 31, 2013	Jan. 31, 2012	Jan. 31, 2013	Jan. 31, 2012
Net income (loss)	$ (10,968)	$ 313,745	$ 489,806	$ 685,922
Other comprehensive income, net of taxes
Unrealized gain on available-for-sale securities, net of taxes of $21,000 and $15,000 for the three months ended January 31, 2013 and 2012, respectively, and $30,000 and $10,000 for the six months ended January 31, 2013 and 2012, respectively.	24,633	29,410	38,029	16,950
Comprehensive income	$ 13,665	$ 343,155	$ 527,835	$ 702,872