CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2022	Jul. 31, 2021
Cash flows from operating activities:
Net loss	$ (428)	$ (1,326)
Adjustments to reconcile net loss to net cash provided by operating activities:
Stock-based compensation expense	6,842	6,515
Depreciation and amortization of capital expenditures	1,739	1,548
Amortization of intangible assets	698	652
Amortization of operating lease right-of-use assets	1,449	1,531
Deferred income tax benefit	(2,043)
Other	26	24
Changes in operating assets and liabilities:
Accounts receivable, net	973	400
Inventories and deferred inventory costs	(7,158)	(1,600)
Prepaid expenses and other assets	(2,326)	(3,007)
Accounts payable, accrued expenses and other liabilities	2,690	(2,127)
Deferred revenue	520	384
Net cash provided by operating activities	2,982	2,994
Cash flows from investing activities:
Proceeds from maturities and sales of short-term investments	9,125	9,900
Purchases of short-term investments	(3,869)	(8,859)
Capital expenditures	(2,812)	(1,742)
Business acquisition	(9,771)
Net cash used in investing activities	(7,327)	(701)
Cash flows from financing activities:
Proceeds from issuance of common stock	1,554	1,621
Net cash provided by financing activities	870	476
Net (decrease) increase in cash and cash equivalents	(3,475)	2,769
Cash and cash equivalents at beginning of period	19,667	17,298
Cash and cash equivalents at end of period	16,192	20,067
Restricted Stock Units (RSUs)
Cash flows from financing activities:
Shares repurchased for tax withholdings on vesting of restricted stock units ("RSU")	$ (684)	$ (1,145)