CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Oct. 31, 2022	Oct. 31, 2021
Cash flows from operating activities:
Net loss	$ (3,238)	$ (1,652)
Adjustments to reconcile net loss to net cash provided by operating activities:
Stock-based compensation expense	10,383	9,748
Depreciation and amortization of capital expenditures	2,737	2,328
Amortization of intangible assets	1,492	978
Amortization of operating lease right-of-use assets	2,248	2,230
Facilities consolidation charges (Note 6)	1,402
Deferred income tax benefit	(2,133)
Other	34	39
Changes in operating assets and liabilities:
Accounts receivable, net	440	(1,057)
Inventories and deferred inventory costs	(8,135)	(1,969)
Prepaid expenses and other assets	(1,304)	(4,362)
Accounts payable, accrued expenses and other liabilities	1,244	(1,738)
Deferred revenue	301	327
Net cash provided by operating activities	5,471	4,872
Cash flows from investing activities:
Proceeds from maturities and sales of short-term investments	10,900	14,230
Purchases of short-term investments	(3,869)	(14,866)
Capital expenditures	(3,907)	(3,050)
Business acquisition	(9,771)
Net cash used in investing activities	(6,647)	(3,686)
Cash flows from financing activities:
Proceeds from issuance of common stock	2,677	2,580
Net cash provided by financing activities	1,546	956
Net increase in cash and cash equivalents	370	2,142
Cash and cash equivalents at beginning of period	19,667	17,298
Cash and cash equivalents at end of period	20,037	19,440
Restricted Stock Units (RSUs)
Cash flows from financing activities:
Shares repurchased for tax withholdings on vesting of restricted stock units ("RSU")	$ (1,131)	$ (1,624)