Income Taxes (Tables)

6 Months Ended

Jul. 31, 2015

Income Tax Disclosure [Abstract]

Provision for Income Taxes

The provision for income taxes was as follows:

	Three months ended July 31,						Six months ended July 31,
	2015			2014			2015			2014
Income tax expense (benefit)	$	4,071		$	(1,768	)	$	2,559		$	(1,942	)
Effective tax rate	11.7		%	(14.7		)%	11.3		%	(22.1		)%