Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2021
Operating activities:
Net income	$ 24,770	$ 19,383	$ 10,366
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, equipment and improvements	6,753	6,644	4,343
Amortization	27,203	30,928	16,534
Stock-based compensation expense	13,286	8,578	8,135
Deferred income tax provision	(12,739)	(3,387)	(4,598)
Change in fair value of contingent consideration	0	(6,200)	5,772
Accounts Receivable, Credit Loss Expense (Reversal)	(2,633)	427	2,290
Other, net	(806)	(188)	131
Changes in operating assets and liabilities (net of acquisitions):
Accounts receivable	(2,925)	(541)	11,467
Inventories	(5,062)	(34,468)	5,879
Other assets	(1,214)	(545)	(1,657)
Income taxes	4,088	(1,305)	165
Accounts payable	(15,503)	7,281	(5,578)
Accrued expenses	1,533	11,133	4,474
Net cash provided by operating activities	36,751	37,740	57,723
Investing activities:
Acquisition of businesses, net of cash acquired	0	(347,554)	(19,108)
Purchase of property, equipment, improvements and certain other intangible assets	(4,345)	(1,974)	(2,257)
Net cash used in investing activities	(4,345)	(349,528)	(21,365)
Financing activities:
Proceeds from long-term debt	0	350,000	617
Payments of debt issuance costs	0	13,443	0
Payments on long-term debt	(36,375)	(148,118)	(15,624)
Payments for contingent consideration	0	0	4,200
Proceeds from issuances of stock, net of offering expenses	0	0	73,830
Proceeds from stock option plan transactions	3,926	9,505	8,525
Proceeds from employee stock purchase plan transactions	2,263	1,500	1,214
Taxes paid for net share settlement of share-based payment awards	(4,314)	(6,662)	(2,120)
Net cash (used in) provided by financing activities	(34,500)	192,782	62,242
Effect of exchange rate changes on cash and cash equivalents	(1,113)	(1,474)	297
Net (decrease) increase in cash and cash equivalents	(3,207)	(117,532)	98,303
Cash and cash equivalents, beginning of period	34,900	152,432	54,129
Cash and cash equivalents, end of period	31,693	34,900	152,432
Supplemental disclosures of cash flow information:
Interest paid	26,351	14,209	917
Income taxes paid, net	8,693	4,333	3,684
Supplemental schedule of non-cash investing and financing activities:
Accrual for property, equipment, improvements and certain other intangibles assets	(277)	(191)	(98)
Tenant improvement allowance	0	0	1,000
Transfer of inventory to property, equipment and improvements	(3,889)	(6,237)	(1,838)
Term debt refinanced as credit facility	0	0	(6,200)
Term debt refinanced as credit facility	$ 0	$ 0	$ 50,000