Goodwill - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended
	Dec. 31, 2013	Dec. 31, 2013
Goodwill [Line Items]
Goodwill impairment charge	$ 56,283,000	$ 56,283,000
Asia/Pacific
Goodwill [Line Items]
Goodwill impairment test period	10 years
Goodwill impairment charge	56,300,000
Sub-Saharan Africa/Europe
Goodwill [Line Items]
Goodwill		$ 42,200,000