Earnings Per Share (Tables)

9 Months Ended

Apr. 30, 2015

Earnings Per Share [Abstract]

Schedule of numerators and denominators used in basic and diluted EPS calculations

The following table reconciles the numerators and denominators used in the basic and diluted EPS calculations:

	Three months ended April 30,			Nine months ended April 30,
	2015		2014	2015	2014
Numerator:
Net income for basic calculation	$	4,960,000	5,875,000	17,770,000	17,163,000
Effect of dilutive securities:
Interest expense (net of tax) on 3.0% convertible senior notes	—		1,117,000	—	3,351,000
Numerator for diluted calculation	$	4,960,000	6,992,000	17,770,000	20,514,000
Denominator:
Denominator for basic calculation	16,202,000		15,200,000	16,220,000	15,882,000
Effect of dilutive securities:
Stock-based awards	180,000		290,000	248,000	218,000
Conversion of 3.0% convertible senior notes	—		6,274,000	—	6,224,000
Denominator for diluted calculation	16,382,000		21,764,000	16,468,000	22,324,000