Description of Business and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Jul. 31, 2015

Description of Business and Summary of Significant Accounting Policies [Abstract]

Schedule of weighted-average number of shares used in the calculation of basic and diluted earnings per share

	Years Ended
	July 31,
	2015		2014		2013
	(in thousands)
Basic weighted-average number of shares		11,457		10,667		10,504
Effect of dilutive securities:
Stock options		-		9		-
Non-vested restricted Class B common stock		-		591		-
Diluted weighted-average number of shares		11,457		11,267		10,504

Summary of shares excluded from the diluted earnings per share computations

	Years Ended
	July 31,
	2015		2014		2013
	(in thousands)
Stock options		4		-		-
Non-vested restricted Class B common stock		331		-		-
Shares excluded from the calculations of diluted earnings (loss) per share		335		-		-

Schedule of change in the allowance for doubtful accounts

Year ended July 31 (in thousands)	Balance at beginning of year		Additions charged to costs and expenses		Deductions			Balance at end of year
2015
Reserves deducted from accounts receivable:
Allowance for doubtful accounts	$	—	$	—	$	—		$	—
2014
Reserves deducted from accounts receivable:
Allowance for doubtful accounts	$	4	$	—	$	(4	)	$	—