Quarterly Results of Operations (Tables)

12 Months Ended

Jul. 31, 2017

Quarterly Financial Information Disclosure [Abstract]

Summary of quarterly results of operations

The following is a summary of the quarterly results of operations for the years ended July 31, 2017 and 2016:

2017	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Net sales	$	187,725		$	184,817		$	192,113		$	205,502
Cost of sales	98,218			96,340			100,665			107,774
Gross profit	89,507			88,477			91,448			97,728
Gross profit percentage	47.7		%	47.9		%	47.6		%	47.6		%
Net income	$	18,800		$	18,070		$	17,511		$	16,997
Earnings per common share:
Basic	$	0.45		$	0.43		$	0.42		$	0.41
Diluted	$	0.45		$	0.43		$	0.42		$	0.41

2016	First Quarter			Second Quarter			Third Quarter			Fourth Quarter
Net sales	$	153,779		$	158,271		$	173,703		$	179,002
Cost of sales	82,581			85,934			93,382			93,672
Gross profit	71,198			72,337			80,321			85,330
Gross profit percentage	46.3		%	45.7		%	46.2		%	47.7		%
Net income	$	14,254		$	15,389		$	14,019		$	16,291
Earnings per common share:
Basic	$	0.34		$	0.37		$	0.34		$	0.39
Diluted	$	0.34		$	0.37		$	0.34		$	0.39