Short-Term Borrowings and Long-Term Debt Interest Rate Swap - Revolving Credit Facility (Details) - USD ($) $ in Thousands	3 Months Ended
	Sep. 30, 2017	Jul. 26, 2017	Jun. 06, 2017	Sep. 30, 2016	Jun. 30, 2016
Line of Credit Facility [Line Items]
Derivative, Notional Amount		$ 23,096	$ 20,253
Derivative, Term of Contract	4 years 245 days
Interest Rate Swap [Member] | Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Derivative, Fixed Interest Rate					2.30%
Derivative, Notional Amount					$ 500,000
Derivative, Term of Contract	4 years 245 days
Derivative Liability, Not Subject to Master Netting Arrangement				$ (3,662)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax				(2,249)
Deferred Tax Assets, Hedging Transactions				$ 1,413