CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Operating activities:
Net income (loss)	$ 10,895	$ (4,685)
Adjustments to reconcile net income (loss) to net cash provided by operating activities, net of acquisitions:
Depreciation and amortization	6,268	4,074
Change on operating lease	(54)	211
Employee stock compensation expense	1,786	540
Provision for doubtful accounts	208	180
Gain on extinguishment of PPP loan	(4,851)
Gain on fair value remeasurement of convertible senior notes	(8,362)
Gain on tax benefit due to acquisitions	(4,985)
Other non-cash operating activities	14	10
Financing lease interest expense	184
Changes in operating assets and liabilities, net of effects of business acquisitions:
Accounts receivable	(11,951)	(620)
Inventories	98	395
Income tax accruals	0	184
Prepaid expenses and other assets	(780)	(1,149)
Accounts payable	2,619	(2,047)
Accrued expenses	5,103	(130)
Customer advances	14,554	4,315
Other asset and liabilities, net		12
Net cash provided by operating activities	10,746	1,290
Investing activities:
Capital expenditures	(12,472)	(6,200)
Proceeds from sale of equipment	2
Cash paid in acquisitions, net of cash received	(41,590)	(3,931)
Net cash used in investing activities	(54,060)	(10,131)
Financing activities:
Payments on finance lease liability	(286)	(319)
Repayment of PPP loan	(200)
Payments of long-term borrowings	(4,153)	(1,847)
Payments of debt issuance costs	(6,223)	(127)
Payments on revolving line of credit	0	(25,325)
Borrowings on revolving line of credit	0	24,263
Borrowings on construction loans	0	1,287
Borrowings on capex lines of credit	2,136	2,906
Borrowings on long-term loan	18,305	8,777
Proceeds from issuance of convertible senior notes	122,036
Proceeds from issuance of convertible senior notes, restricted cash	18,000
Proceeds from exercise of stock options	246	26
Proceeds from issuance of common stock, net	48,971
Net cash provided by financing activities	198,832	9,641
Net increase in cash and cash equivalents	155,518	800
Cash, cash equivalents, and restricted cash at beginning of period	1,406	606
Cash, cash equivalents, and restricted cash at end of period	156,924	1,406
Supplemental disclosure of cash flow information:
Cash paid for interest	1,267	1,039
Acquisitions:
Assets acquired	91,479	6,442
Liabilities assumed	(14,255)	(1,378)
Common shares issued	(35,634)	(1,133)
Cash paid	$ 41,590	$ 3,931