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Balance Sheet Details (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Jan. 31, 2018	Sep. 30, 2017	Mar. 31, 2018	Mar. 31, 2017	Mar. 31, 2018	Mar. 31, 2017	Jun. 30, 2017
Accounts Receivable
Accounts receivable			$ 226,217		$ 226,217		$ 216,089
Less allowance for doubtful accounts			(9,537)		(9,537)		(9,563)
Accounts receivable, net			216,680		216,680		206,526
Inventories
Raw materials			157,434		157,434		129,645
Work-in-process			85,273		85,273		65,454
Finished goods			61,586		61,586		53,411
Inventories			304,293		304,293		248,510
Property and Equipment
Property and equipment, gross			244,389		244,389		389,655
Less accumulated depreciation and amortization			(130,722)		(130,722)		(248,116)
Property and equipment, net			113,667		113,667		141,539
Depreciation expense			5,400	$ 13,300	38,400	$ 39,900
Contract with Mexican government
Term of agreement with Mexican government to provide security screening services	2 years
Prepaid expenses and other current assets
Contract with Mexican government
Remaining cost to obtain the contract			14,700		14,700
Other assets
Contract with Mexican government
Remaining cost to obtain the contract			11,600		11,600
AS&E facility in Billerica, MA
Property and Equipment
Purchase of property and equipment		$ 19,800
Land, buildings, civil works and improvements
Property and Equipment
Property and equipment, gross			73,893		73,893		171,335
Leasehold improvements
Property and Equipment
Property and equipment, gross			9,317		9,317		9,025
Equipment and tooling
Property and Equipment
Property and equipment, gross			115,220		115,220		166,991
Furniture and fixtures
Property and Equipment
Property and equipment, gross			3,429		3,429		3,371
Computer equipment
Property and Equipment
Property and equipment, gross			18,801		18,801		17,991
Software development costs
Property and Equipment
Property and equipment, gross			19,146		19,146		17,303
Computer software implementation in process
Property and Equipment
Property and equipment, gross			3,344		3,344		2,590
Construction in process
Property and Equipment
Property and equipment, gross			$ 1,239		$ 1,239		$ 1,049

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