Revenue (Tables)

3 Months Ended

Oct. 31, 2019

Revenue from Contract with Customer [Abstract]

Schedules of concentration of risk

Sales by geography and customer type, as a percentage of consolidated net sales, are as follows:

	Three months ended October 31,
	2019		2018
United States
U.S. government	40.8	%	44.2	%
Domestic	36.1	%	31.4	%
Total United States	76.9	%	75.6	%
International	23.1	%	24.4	%
Total	100.0	%	100.0	%

Schedule of disaggregation of revenue

	Three months ended October 31, 2019
	Commercial Solutions		Government Solutions	Total
Geographical region and customer type
U.S. government	$	16,748,000	52,773,000	$	69,521,000
Domestic	53,354,000		8,041,000	61,395,000
Total United States	70,102,000		60,814,000	130,916,000
International	24,212,000		15,139,000	39,351,000
Total	$	94,314,000	75,953,000	$	170,267,000
Contract type
Firm fixed price	$	92,548,000	50,724,000	$	143,272,000
Cost reimbursable	1,766,000		25,229,000	26,995,000
Total	$	94,314,000	75,953,000	$	170,267,000
Transfer of control
Point in time	$	37,723,000	37,786,000	$	75,509,000
Over time	56,591,000		38,167,000	94,758,000
Total	$	94,314,000	75,953,000	$	170,267,000

	Three months ended October 31, 2018
	Commercial Solutions		Government Solutions	Total
Geographical region and customer type
U.S. government	$	14,220,000	56,824,000	$	71,044,000
Domestic	42,237,000		8,274,000	50,511,000
Total United States	56,457,000		65,098,000	121,555,000
International	21,516,000		17,773,000	39,289,000
Total	$	77,973,000	82,871,000	$	160,844,000
Contract type
Firm fixed price	$	76,290,000	63,611,000	$	139,901,000
Cost reimbursable	1,683,000		19,260,000	20,943,000
Total	$	77,973,000	82,871,000	$	160,844,000
Transfer of control
Point in time	$	37,945,000	52,623,000	$	90,568,000
Over time	40,028,000		30,248,000	70,276,000
Total	$	77,973,000	82,871,000	$	160,844,000