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Income Taxes - Reconciliation of Income Taxes by Jurisdiction (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Jan. 31, 2016	Oct. 31, 2015	Jul. 31, 2015	Apr. 30, 2015	Jan. 31, 2015	Oct. 31, 2014	Jul. 31, 2014	Apr. 30, 2014	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2014
(Loss) income before income taxes is attributable to the following jurisdictions:
Domestic									$ (11,900)	$ (6,766)	$ (4,323)
Foreign									(15,859)	(3,420)	10,349
(Loss) income before income taxes	$ (12,163)	$ (6,559)	$ (8,645)	$ (392)	$ (10,669)	$ (340)	$ (4,023)	$ 4,846	(27,759)	(10,186)	6,026
Current:
Domestic									(16)	387	802
Foreign									684	1,687	2,660
Total									668	2,074	3,462
Deferred:
Domestic									10,762	(4,230)	(3,039)
Foreign									(453)	1,162	835
Total									10,309	(3,068)	(2,204)
Income tax expense (benefit)	$ 14,675	$ (746)	$ (2,797)	$ (155)	$ (1,484)	$ 57	$ (676)	$ 1,109	$ 10,977	$ (994)	$ 1,258

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