Income Taxes (Tables)

6 Months Ended

Jul. 31, 2020

Income Tax Disclosure [Abstract]

Schedule of Provision for Income Taxes

The following table provides details of the provision for income taxes:

	Three Months Ended July 31,						Six Months Ended July 31,
	2020			2019			2020			2019
	(in thousands, except percentages)
Net income before provision for income taxes	$	190,185		$	6,757		$	219,360		$	9,287
Provision for income taxes	4,196			1,216			6,296			1,532
Effective tax rate	2.2		%	18.0		%	2.9		%	16.5		%