Income Taxes (Tables)

9 Months Ended

Oct. 31, 2015

Income Tax Disclosure [Abstract]

Provision for Income Taxes

The provision for income taxes was as follows:

	Three months ended October 31,						Nine months ended October 31,
	2015			2014			2015			2014
Income tax expense	$	7,204		$	3,849		$	9,763		$	1,907
Effective tax rate	34.2		%	15.8		%	22.3		%	5.7		%