Acquisitions - Net Purchase Price and Fair Values of Assets and Liabilities Acquired (Details) - USD ($) $ in Thousands		6 Months Ended
	Dec. 16, 2015	Dec. 31, 2015	Dec. 31, 2014	Jun. 30, 2015
Consideration transferred
Net purchase price		$ 9,764	$ 0
Estimated fair value of tangible assets acquired and liabilities assumed
Estimated fair value of goodwill		$ 173,749		$ 168,146
Lewis Innovative Technologies, Inc. (LIT) [Member]
Consideration transferred
Cash paid at closing	$ 10,290
Working capital adjustment	(236)
Less cash and cash equivalents acquired	(290)
Net purchase price	9,764
Estimated fair value of tangible assets acquired and liabilities assumed
Cash and cash equivalents	290
Accounts receivable and cost in excess of billings	290
Other current and non-current assets	175
Current liabilities	(264)
Estimated fair value of net tangible assets acquired	491
Estimated fair value of identifiable intangible assets	3,960
Estimated fair value of goodwill	5,603
Estimated fair value of assets acquired	$ 10,054