Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Operating activities:
Net income	$ 19,383	$ 10,366	$ 8,411
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, equipment and improvements	6,644	4,343	4,545
Amortization	30,928	16,534	14,754
Stock-based compensation	8,578	8,135	7,237
Deferred income tax provision	(3,387)	(4,598)	(3,357)
Loss on sale of property, equipment and improvements	4	89	0
Change in fair value of contingent consideration	(6,200)	5,772	(128)
Provision for bad debt and product returns	427	2,290	2,135
Provision for inventory obsolescence	6,901	1,200	2,630
Other, net	(192)	42	366
Changes in operating assets and liabilities (net of acquisitions):
Accounts receivable	(541)	11,467	5,539
Inventories	(41,369)	4,679	(11,133)
Other assets	(545)	(1,657)	(704)
Income taxes	(1,305)	165	(1,100)
Accounts payable	7,281	(5,578)	3,205
Accrued expenses	11,133	4,474	2,078
Net cash provided by operating activities	37,740	57,723	34,478
Investing activities:
Acquisition of businesses, net of cash acquired	(347,554)	(19,108)	(136,098)
Purchase of property, equipment, improvements and certain other intangible assets	(1,974)	(2,257)	(899)
Net cash used in investing activities	(349,528)	(21,365)	(136,997)
Financing activities:
Proceeds from long-term debt	350,000	617	119,018
Payments of debt issuance costs	13,443	0	0
Payments on long-term debt	(148,118)	(15,624)	(55,893)
Payments for contingent consideration	0	4,200	4,698
Proceeds from issuances of stock, net of offering expenses	0	73,830	0
Proceeds from stock option plan transactions	9,505	8,525	5,902
Proceeds from employee stock purchase plan transactions	1,500	1,214	1,065
Taxes paid for net share settlement of share-based payment awards	(6,662)	(2,120)	(1,791)
Net cash provided by financing activities	192,782	62,242	63,603
Effect of exchange rate changes on cash and cash equivalents	(1,474)	(297)	253
Net (decrease) increase in cash and cash equivalents	(117,532)	98,303	(38,663)
Cash and cash equivalents, beginning of period	152,432	54,129	92,792
Cash and cash equivalents, end of period	34,900	152,432	54,129
Supplemental disclosures of cash flow information:
Interest paid	14,209	917	3,009
Income taxes paid, net	4,333	3,684	3,686
Supplemental schedule of non-cash investing and financing activities:
Accrual for property, equipment, improvements and certain other intangibles assets	(191)	(98)	(26)
Tenant improvement allowance	0	(1,000)	0
Transfer of inventory to property, equipment and improvements	(6,237)	(1,838)	(1,363)
Term debt refinanced as credit facility	0	(6,200)	(5,100)
Term debt refinanced as credit facility	$ 0	$ 50,000	$ 0