Income Taxes (Tables)

9 Months Ended

Oct. 31, 2015

Income Tax Disclosure [Abstract]

Summary of Details Income Taxes

The following table provides details of income taxes for the periods indicated:

	Three Months Ended						Nine Months Ended
	October 31,						October 31,
	2015			2014			2015			2014
	(in thousands)
Income before income taxes	$	30,496		$	18,691		$	75,896		$	34,870
Provision for income taxes		1,035			364			4,484			1,973
Effective tax rate		3.4	%		2.0	%		5.9	%		5.7	%