Condensed Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Loss	Treasury stock, at cost
Beginning Balance (in shares) at Jul. 31, 2018		41,706,084
Beginning Balance at Jul. 31, 2018	$ 608,867	$ 4,624	$ 184,212	$ 491,540	$ (11,456)	$ (60,053)
Increase (Decrease) in Stockholders' Equity
Repurchases of shares (in shares)		(37,802)
Repurchases of shares	(4,288)					(4,288)
Stock-based compensation	2,576		2,576
Equity vests/option exercises (in shares)		53,320
Equity vests/option exercises	955	$ 7	948
Cancellations of restricted stock (in shares)		(286)
Cancellations of restricted stock	0
Net income	19,242			19,242
Other	(634)		(634)
Other comprehensive income (loss)	(5,223)				(5,223)
Ending Balance (in shares) at Oct. 31, 2018		41,721,316
Ending Balance at Oct. 31, 2018	$ 622,360	$ 4,631	187,102	511,647	(16,679)	(64,341)
Beginning Balance (in shares) at Jul. 31, 2019	41,771,228	41,771,228
Beginning Balance at Jul. 31, 2019	$ 661,537	$ 4,636	204,795	539,097	(22,197)	(64,794)
Increase (Decrease) in Stockholders' Equity
Repurchases of shares (in shares)		(49,614)
Repurchases of shares	(3,613)					(3,613)
Stock-based compensation	2,404		2,404
Issuance of shares (in shares)		751,471
Issuance of shares	$ 60,000	$ 75	59,925
Equity vests/option exercises (in shares)	25,000	104,686
Equity vests/option exercises	$ 919	$ 11	908
Cancellations of restricted stock (in shares)		(946)
Cancellations of restricted stock	0
Net income	5,767			5,767
Other comprehensive income (loss)	$ 5,177				5,177
Ending Balance (in shares) at Oct. 31, 2019	42,576,825	42,576,825
Ending Balance at Oct. 31, 2019	$ 732,191	$ 4,722	$ 268,032	$ 544,864	$ (17,020)	$ (68,407)