Business Acquisitions (Details) - USD ($) $ in Thousands		3 Months Ended
	Aug. 31, 2017	Sep. 30, 2017	Jun. 30, 2017
Business Acquisition [Line Items]
Goodwill		$ 558,831	$ 552,465
Vanguard Software Group [Member]
Business Acquisition [Line Items]
Business Acquisition, Effective Date of Acquisition	Aug. 31, 2017
Payments to Acquire Businesses, Gross	$ 10,744
Current assets	1,153
Long-term assets	14
Identifiable intangible assets	4,195
Total liabilities assumed	(1,117)
Total identifiable net assets	4,245
Net assets acquired	10,744
Acquisition goodwill expected to be tax deductible	6,499
Cash Acquired from Acquisition	289
Business Combination, Acquired Receivables, Fair Value	847
Business Combination, Acquired Receivables, Gross Contractual Amount	847
Business Combination, Acquired Receivables, Estimated Uncollectible	0
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual		99
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual		$ (115)
Customer Relationships [Member] | Vanguard Software Group [Member]
Business Acquisition [Line Items]
Identifiable Intangible Assets Acquired	$ 2,234
Identifiable Intangible Assets, Weighted Average Useful Life	15 years
Computer Software, Intangible Asset [Member] | Vanguard Software Group [Member]
Business Acquisition [Line Items]
Identifiable Intangible Assets Acquired	$ 1,426
Identifiable Intangible Assets, Weighted Average Useful Life	10 years
Other Intangible Assets [Member] | Vanguard Software Group [Member]
Business Acquisition [Line Items]
Identifiable Intangible Assets Acquired	$ 535
Identifiable Intangible Assets, Weighted Average Useful Life	10 years
Complementary [Member] | Vanguard Software Group [Member]
Business Acquisition [Line Items]
Goodwill	$ 6,499