Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Cash flows from operating activities:
Net loss	$ (7,703)	$ (21,009)
Adjustments to reconcile net loss to net cash provided by operating activities:
Depreciation and amortization expense	4,359	5,011
Stock-based compensation expense	2,625	1,824
Provision adjustments related to doubtful accounts	188	62
Provision adjustments related to product warranty	178	139
Net gain on disposal of property, plant and equipment	(2,229)	0
Issuance of restricted stock units	410	0
Other	(113)	(72)
Total non-cash adjustments	5,418	6,964
Changes in operating assets and liabilities:
Accounts receivable anc contract assets	(2,566)	5,119
Inventory	(293)	(1,211)
Other assets	(13,706)	(3,899)
Accounts payable	2,738	(4,508)
Accrued expenses and other current liabilities	10,707	6,835
Total change in operating assets and liabilities	(3,120)	2,336
Net cash used in operating activities	(5,405)	(11,709)
Cash flows from investing activities:
Purchase of equipment	(3,391)	(8,615)
Acquisition of business, net of cash acquired	0	(22,246)
Proceeds from disposal of property, plant and equipment	15,300	0
Net cash provided by (used in) investing activities	11,909	(30,861)
Cash flows from financing activities:
Net payments on credit facilities	(5,497)	0
Proceeds from PPP loan	6,488	0
Proceeds from exercise of equity awards	281	238
Taxes paid related to net share settlement of equity awards	(82)	(203)
Net cash provided by financing activities	1,190	35
Effect of exchange rate changes provided by foreign currency	11	1
Net increase (decrease) in cash, cash equivalents and restricted cash	7,705	(42,534)
Cash, cash equivalents and restricted cash at beginning of period	21,977	63,195
Cash, cash equivalents and restricted cash at end of period	29,682	20,661
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash paid during the period for interest	98	96
Cash paid during the period for income taxes	60	59
NON-CASH INVESTING AND FINANCING ACTIVITIES
Changes in accounts payable related to purchases of equipment	$ (357)	$ (338)

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