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

12 Months Ended

Jul. 31, 2014

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

Summary of Weighted-Average Number of Shares used in Calculation of Basic and Diluted Earnings Per Share

Year ended July 31  (in thousands)	2014		2013		2012
Basic weighted-average number of shares		22,009		20,876		20,717
Effect of dilutive securities:
Stock options		92		9		—
Non-vested restricted Class B common stock		836		1,430		1,343
Diluted weighted-average number of shares		22,937		22,315		22,060

Summary of Outstanding Stock Options Excluded from Calculation of Diluted Earnings Per Share

Year ended July 31  (in thousands)	2014		2013		2012
Shares excluded from the calculation of diluted earnings per share		70		611		619

Summary of Change in Allowance for Doubtful Accounts

Year ended July 31  (in thousands)	Balance at beginning of year		Additions charged to costs and expenses		Deductions(1)			Balance at end of year
2014
Reserves deducted from accounts receivable:
Allowance for doubtful accounts	$	13,079	$	500	$	(2,072	)	$	11,507
2013
Reserves deducted from accounts receivable:
Allowance for doubtful accounts	$	13,044	$	2,743	$	(2,708	)	$	13,079
2012
Reserves deducted from accounts receivable:
Allowance for doubtful accounts	$	15,364	$	2,098	$	(4,418	)	$	13,044

(1) Primarily uncollectible accounts written off, net of recoveries.