Income Taxes (Tables)

6 Months Ended

Jul. 31, 2013

Income Tax Disclosure [Abstract]

Provision for Income Taxes

The provision for income taxes was comprised of the following:

	Three months ended July 31,						Six months ended July 31,
	2013			2012			2013			2012
Income tax benefit	$	(2,338	)	$	(2,764	)	$	(1,770	)	$	(1,983	)
Effective tax rate	(10.9		)%	(18.7		)%	(8.2		)%	(4.6		)%