GECO Avionics, LLC [Disclosure] Acquisition (Details) - USD ($) $ in Thousands	Jan. 29, 2019	Jul. 31, 2018	Sep. 27, 2019	Jun. 30, 2019	Jan. 31, 2019
Business Acquisition [Line Items]
Goodwill			$ 617,175	$ 562,146
GECO Avionics, LLC
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 36,500
Goodwill					$ 21,023
Business Acquisition, Goodwill, Expected Tax Deductible Amount			20,660
Germane Systems
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross		$ 47,166
Goodwill		$ 23,558
Business Acquisition, Goodwill, Expected Tax Deductible Amount			$ 22,163
Customer Relationships [Member] | GECO Avionics, LLC
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	11 years
Finite-lived Intangible Assets Acquired	$ 6,900
Customer Relationships [Member] | Germane Systems
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		11 years
Finite-lived Intangible Assets Acquired		$ 8,500,000
Developed Technology Rights [Member] | GECO Avionics, LLC
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life	10 years
Finite-lived Intangible Assets Acquired	$ 4,800
Developed Technology Rights [Member] | Germane Systems
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		8 years
Finite-lived Intangible Assets Acquired		$ 4,200,000
Order or Production Backlog [Member] | GECO Avionics, LLC
Business Acquisition [Line Items]
Finite-lived Intangible Assets Acquired	$ 1,000
Order or Production Backlog [Member] | Germane Systems
Business Acquisition [Line Items]
Acquired Finite-lived Intangible Assets, Weighted Average Useful Life		1 year
Finite-lived Intangible Assets Acquired		$ 210,000