Revenue Recognition (Tables)

9 Months Ended

Apr. 30, 2020

Revenue from Contract with Customer [Abstract]

Schedule of net sales disaggregated by geography and product line

The following table gives information as to the net sales disaggregated by geography and product line:

	Three Months Ended April 30,				Nine Months Ended April 30,
Net sales by geography	2020		2019		2020		2019
United States	$	176,688	$	163,367	$	574,370	$	497,469
Europe/Africa/Middle East	37,518		39,949		128,032		106,278
Asia/Pacific	14,766		15,140		54,097		46,476
Canada	6,448		8,555		22,026		24,064
Latin America/South America	1,513		1,541		4,152		4,392
Total	$	236,933	$	228,552	$	782,677	$	678,679
Net sales by product line
Capital equipment	$	50,589	$	51,351	$	169,061	$	166,870
Consumables	131,486		144,515		438,974		417,067
Product service	29,243		31,074		92,374		91,428
Instrument sales	25,040		—		79,381		—
All other(1)	575		1,612		2,887		3,314
Total	$	236,933	$	228,552	$	782,677	$	678,679

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(1)Primarily includes software licensing revenues.

Schedule of contract liabilities activity

A summary of contract liabilities activity follows:

	Nine Months Ended April 30,
	2020		2019
Beginning balance	$	28,235	$	29,015
Revenue deferred in current year	41,733		48,589
Deferred revenue recognized	(42,705)		(49,710)
Foreign currency translation	(70)		(435)
Ending balance	27,193		27,459
Contract liabilities included in Other long-term liabilities	(309)		(824)
Deferred revenue	$	26,884	$	26,635