Fair Value of Financial Instruments - Additional Information (Details) € in Thousands, £ in Thousands, $ in Thousands	9 Months Ended
	Mar. 31, 2017 USD ($)	Mar. 31, 2017 EUR (€) derivative	Mar. 31, 2017 GBP (£) derivative	Jun. 30, 2016 EUR (€)	Jun. 30, 2016 GBP (£)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Change in estimated fair value of contingent consideration | $	$ 0
Interest Rate Swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Number of derivative instruments | derivative		2	2
Interest rate swaps One
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative instruments, notional amount | £			£ 83,955		£ 84,608
Derivative instruments, fixed interest rate		1.1649%	1.1649%
Interest rate swaps Two
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Derivative instruments, notional amount | €		€ 96,783		€ 97,786
Derivative instruments, fixed interest rate		1.0139%	1.0139%