Marketable Securities (Tables)

6 Months Ended

Jan. 31, 2013

Investments, Debt and Equity Securities [Abstract]

Fair Value, Assets Measured on Recurring Basis [Table Text Block]

In accordance with the provisions of Fair Value Measurements, the following are the Company's financial assets presented at fair value at January 31, 2013 and July 31, 2012.

Fair value measurements at reporting date using

Quoted prices

Quoted prices

in active

Significant

in active

Significant

markets for

other

Significant

markets for

other

Significant

identical

observable

unobservable

identical

observable

unobservable

assets/liabilities

inputs

inputs

assets/liabilities

inputs

inputs

January 31

July 31

Description

2013

(Level 1)

(Level 2)

(Level 3)

2012

(Level 1)

(Level 2)

(Level 3)

Assets:

Marketable securities -

available-for-sale

$

2,575,747

$

2,575,747

$

–

$

–

$

2,215,209

$

2,215,209

$

–

$

–

held-to-maturity

75,606

75,606

–

–

178,176

178,176

–

–

$

2,651,353

$

2,651,353

$

–

$

–

$

2,393,385

$

2,393,385

$

–

$

–

Marketable Securities [Table Text Block]

As of January 31, 2013 and July 31, 2012, the Company's marketable securities were classified as follows:

	January 31, 2013								July 31, 2012
			Gross		Gross						Gross		Gross
			Unrealized		Unrealized		Fair				Unrealized		Unrealized		Fair
	Cost		Gains		Losses		Value		Cost		Gains		Losses		Value
Current:
Held-to-maturity:
Certificate of deposit	$	50,295	$	–	$	–	$	50,295	$	50,246	$	–	$	–	$	50,246
Corporate debt
securities		75,511		95		–		75,606		176,151		2,025		–		178,176
	$	125,806	$	95	$	–	$	125,901	$	226,397	$	2,025	$	–	$	228,422
Noncurrent:
Available-for-sale:
Mutual funds	$	1,548,491	$	193,647	$	5,104	$	1,737,034	$	1,255,982	$	123,203	$	–	$	1,379,185
Equity securities		715,750		142,425		19,462		838,713		715,750		135,813		15,539		836,024
	$	2,264,241	$	336,072	$	24,566	$	2,575,747	$	1,971,732	$	259,016	$	15,539	$	2,215,209

Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value [Table Text Block]

The Company's debt and equity securities, gross unrealized losses and fair value, aggregated by investment category and length of time that the investment securities have been in a continuous unrealized loss position, at January 31, 2013, are as follows.

			Less Than		More Than
	Fair Value		12 Months		12 Months
Equity securities	$	181,292	$	19,462	$	–
Mutual funds		250,911		5,104		–
Total	$	432,203	$	24,566	$	–

Investment Income [Table Text Block]

Investment income consists of the following:

	Three Months Ended					Six Months Ended
	January 31					January 31
	2013		2012			2013			2012
Loss on sale of marketable securities	$	–	$	(6,030	)	$	(517	)	$	(14,232	)
Interest income		2,365		2,058			4,892			8,352
Dividend income		44,508		19,377			52,822			24,097
Total	$	46,873	$	15,405		$	57,197		$	18,217