Changes in Carrying Amount of Goodwill by Location (Detail) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2016	Mar. 31, 2015
Goodwill, beginning balance	$ 36,887	$ 38,461
Additions due to acquisitions	11,914
Foreign currency translation	(1,381)	(1,574)
Goodwill, ending balance	47,420	36,887
Americas
Goodwill, beginning balance	23,940	23,940
Additions due to acquisitions	1,789
Foreign currency translation		0
Goodwill, ending balance	25,729	23,940
Europe
Goodwill, beginning balance	12,947	14,521
Additions due to acquisitions	10,125
Foreign currency translation	(1,381)	(1,574)
Goodwill, ending balance	$ 21,691	$ 12,947

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.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

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