Condensed consolidated statements of cash flows (unaudited) - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2020	Oct. 31, 2019
Cash flows from operating activities:
Net income	$ 3,467	$ 39,854
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	85,485	28,791
Stock-based compensation	30,313	31,194
Amortization of debt issuance costs	3,818	1,138
Gains on marketable equity securities	0	(27,570)
Other non-cash items	1,727	139
Deferred taxes	(973)	690
Changes in operating assets and liabilities:
Accounts receivable	8,063	(1,901)
Other assets	3,309	(4,863)
Operating lease right-of-use assets	8,344	3,340
Accrued compensation	(15,251)	(8,012)
Accounts payable, accrued liabilities, and other current liabilities	(7,936)	14,179
Operating lease liabilities, non-current	(8,361)	(2,859)
Other long-term liabilities	8,712	(50)
Net cash provided by operating activities	120,717	74,070
Cash flows from investing activities:
Purchases of property and equipment	(11,388)	(5,180)
Purchases of software and capitalized software development costs	(37,242)	(17,232)
Acquisition of intangible member assets	(28,100)	(9,070)
Purchases of marketable securities	0	(53,845)
Acquisitions, net of cash acquired	0	(1,630,066)
Net cash used in investing activities	(76,730)	(1,715,393)
Cash flows from financing activities:
Proceeds from follow-on equity offering, net of payments for offering costs	286,779	458,495
Principal payments on long-term debt	(223,438)	0
Settlement of client-held funds obligation, net	(4,189)	(230,928)
Proceeds from exercise of common stock options	4,491	7,342
Proceeds from long-term debt	0	1,250,000
Payment of debt issuance costs	0	(30,504)
Net cash provided by financing activities	63,643	1,454,405
Increase (decrease) in cash and cash equivalents	107,630	(186,918)
Beginning cash and cash equivalents	191,726	361,475
Ending cash and cash equivalents	299,356	174,557
Supplemental cash flow data:
Interest expense paid in cash	22,849	249
Income taxes paid in cash, net of refunds received	1,053	9,127
Supplemental disclosures of non-cash investing and financing activities:
Property and equipment included in accounts payable or accrued liabilities	167	168
Decrease in goodwill due to measurement period adjustments, net	5,838	0
Exercise of common stock options receivable	89	21
Equity-based acquisition consideration	0	3,776
Computer software intangible asset
Supplemental disclosures of non-cash investing and financing activities:
Purchases of intangible assets	1,346	316
Acquired HSA portfolios
Supplemental disclosures of non-cash investing and financing activities:
Purchases of intangible assets	$ 289	$ (151)