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Unaudited Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Cash flows from operating activities:
Net loss	$ (28,171)	$ (14,161)
Adjustments to reconcile net loss to net cash used in operations:
Depreciation and amortization	4,104	4,009
Stock-based compensation expense	3,492	3,513
Provision for excess and obsolete inventory	1,247	1,627
Deferred income taxes	65	(2,136)
Change in fair value of contingent consideration	(340)	(4,440)
China dissolution	1,921	0
Non-cash interest income	0	(49)
Other non-cash items	185	407
Unrealized foreign exchange loss on cash and cash equivalents	(3)	(118)
Changes in operating asset and liability accounts:
Accounts receivable	2,738	(4,528)
Inventory	(16,324)	(279)
Prepaid expenses and other assets	(165)	85
Accounts payable and accrued expenses	2,565	(236)
Deferred revenue	11,619	381
Net cash used in operating activities	(17,067)	(15,925)
Cash flows from investing activities:
Purchase of property, plant and equipment	(970)	(710)
Cash paid for acquisition, net of cash acquired	0	(11,479)
Proceeds from the maturity of marketable securities	0	5,189
Change in other assets	(194)	(56)
Net cash used in investing activities	(1,164)	(7,056)
Cash flows from financing activities:
Repurchase of treasury stock	0	(46)
Repayment of debt	(56)	(30)
Proceeds from exercise of employee stock options and ESPP	127	125
Net cash provided by financing activities	71	49
Effect of exchange rate changes on cash	25	(51)
Net decrease in cash, cash equivalents and restricted cash	(18,135)	(22,983)
Cash, cash equivalents and restricted cash at beginning of period	49,486	75,539
Cash, cash equivalents and restricted cash at end of period	31,351	52,556
Supplemental schedule of cash flow information:
Cash paid for income taxes, net of refunds	280	445
Non-cash investing and financing activities
Issuance of common stock in connection with the purchase of Neeltran, Inc.	0	4,387
Issuance of common stock to settle liabilities	$ 476	$ 2,643

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