Changes in Carrying Amount of Goodwill by Location (Detail) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Goodwill, beginning balance	$ 46,136	$ 47,420
Additions due to acquisitions		1,580
Impairment loss	(8,036)
Foreign currency translation	1,954	(2,864)
Goodwill, ending balance	40,054	46,136
Americas
Goodwill, beginning balance	27,309	25,729
Additions due to acquisitions		1,580
Impairment loss	0
Foreign currency translation	0	0
Goodwill, ending balance	27,309	27,309
Europe
Goodwill, beginning balance	18,827	21,691
Additions due to acquisitions	0	0
Impairment loss	(8,036)
Foreign currency translation	1,954	(2,864)
Goodwill, ending balance	$ 12,745	$ 18,827

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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