Fair Value Measurements (Narrative) (Detail) - USD ($) shares in Thousands, $ in Thousands	1 Months Ended		3 Months Ended		6 Months Ended
	Mar. 21, 2017	Dec. 21, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Jun. 30, 2017	Nov. 30, 2015
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unrealized gain on interest rate swap					$ 401
Accrued contingent consideration			$ 3,132		3,132		$ 2,952
Aggregate principal amount of notes								$ 143,750
Theoretical borrowing rate used to calculate fair value of debt								6.50%
Fair value of the notes			129,500		129,500
Number of shares to be issued						5,122
Fair value of future issuance of shares				$ 90,400		$ 90,400
Foreign currency contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative, notional amount			62,300		62,300
Unrealized (losses) gains on hedging activities			(34)	$ (547)	261	$ (583)
Cash flow hedging | December 21, 2021 | Interest rate swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Additional interest cost rate of derivative	2.005%
Derivative, notional amount	$ 100,000
Derivative, expiration date	Dec. 21, 2021
Notional balance of derivative			90,000		90,000
France Company
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Accrued contingent consideration			87		87		145
Citron and Lucid
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Accrued contingent consideration			$ 3,045		$ 3,045		$ 2,807
Number of shares to be issued		5,122