Debt - Additional Information (Detail) $ in Thousands	6 Months Ended
	Dec. 31, 2017 USD ($) Rate	Jun. 30, 2017 USD ($)
Credit Agreement Terms
Senior secured revolving credit facility | $	$ 300,000	$ 300,000
Line Of Credit Facility Expiration Date	Feb. 08, 2022
Senior Leverage Ratio, Maximum	3.00
Senior Leverage Ratio, Minimum	1.00
Fixed Charge Coverage Ratio, Maximum	1.25
Fixed Charge Coverage Ratio, Minimum	1.00
Amount of Limit on Asset Dispositions | $	$ 20,000
Additional Margin on alternate base rate loans, Minimum	0.625%
Additional Margin on alternate base rate loans, Maximum	1.625%
Sublimit on Australian Dollar, Canadian Dollar, Euro and Pounds Sterling | $	$ 75,000
Sub-limit on letters of credit under the credit facility | $	$ 200,000
Additional Margin on Adjusted LIBO, EURIBO and CDOR loans, Minimum	1.625%
Additional Margin on Adjusted LIBO, EURIBO and CDOR loans, Maximum	2.625%
Additional Margin on Canadian prime rate loans, Minimum	2.125%
Additional Margin on Canadian prime rate loans, Maximum	3.125%
Consolidated EBITDA as defined in the Credit Agreement | $	$ 25,900
Consolidated funded indebtedness | $	$ 77,900
Dividend Restriction Under Credit Agreement, Percent	100.00%
Dividend Restriction Under Credit Agreement, Amount | $	$ 30,000
Minimum [Member]
Credit Agreement Terms
Unused Credit Facility Fee	0.25%
Maximum [Member]
Credit Agreement Terms
Unused Credit Facility Fee	0.45%
Debt Amendment [Member]
Credit Agreement Terms
Senior Leverage Ratio, Maximum	4.00
Senior Leverage Ratio, Minimum	1.00
Additional Margin on alternate base rate loans, Maximum	1.875%
Additional Margin on Adjusted LIBO, EURIBO and CDOR loans, Maximum	2.875%
Additional Margin on Canadian prime rate loans, Maximum	3.375%
Minimum Consolidated EBITDA Required | $	$ 15,000
Restricted Payments Under Credit Amendment | $	$ 5,000
Leverage Ratio Allowed for Restricted Payments, Maximum	2.50
Leverage Ratio Allowed for Restricted Payments, Minimum	1.00
Debt Amendment [Member] | Maximum [Member]
Credit Agreement Terms
Unused Credit Facility Fee	0.50%