Intangible Assets (Detail) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2017		Dec. 31, 2016	Dec. 31, 2015
Intangible Assets
Intangible Assets, Beginning Balance		$ 75,018		$ 78,492	$ 85,496
Foreign currency translation adjustment		(2,823)		(11,400)
Amortization		(6,831)		(6,161)	(7,004)
Intangible Assets, Ending Balance		72,707		75,018	78,492
Goodwill
Beginning balance		14,201	[1]		18,101
Acquisition of goodwill		434
Foreign currency translation adjustment		1,137		(3,900)
Ending balance	[1]	15,772		14,201
Goodwill and Intangible Assets
Goodwill and intangible assets, Beginning Balance		89,219		96,593	103,597
Acquisition of goodwill		434
Foreign currency translation adjustment				(15,300)
Amortization		(6,831)		(6,161)	(7,004)
Goodwill and Intangible Assets, Ending Balance		88,479		89,219	$ 96,593
Trade Names
Intangible Assets
Acquisition of Intangible Assets		1,134		5,159
Goodwill and Intangible Assets
Acquisition of customer relationships		1,134		5,159
Customer Relationships
Intangible Assets
Acquisition of Intangible Assets		563		8,878
Goodwill and Intangible Assets
Acquisition of customer relationships		563		8,878
Other
Intangible Assets
Acquisition of Intangible Assets				50
Goodwill and Intangible Assets
Acquisition of customer relationships				$ 50
Foreign currency translation adjustment		$ 3,960

[1] No goodwill is allocated to the Company's Retail Direct reportable segment.