Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Operating activities:
Net income	$ 3,978	$ 7,672
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation of property, equipment and improvements	3,472	3,343
Amortization of intangible assets	10,687	6,669
Stock-based compensation	5,323	4,180
Deferred income tax provision	744	1,189
Gain on sale of property and equipment	0	(4,458)
Change in fair value of contingent consideration	(128)	1,188
Provision for bad debt and product returns	438	594
Provision for inventory obsolescence	1,467	1,350
Restructuring charge (reversal)	129	(87)
Other	(37)	131
Changes in operating assets and liabilities (net of acquisitions)	(6,920)	757
Net cash provided by operating activities	19,153	22,528
Investing activities:
Proceeds from maturities and sales of marketable securities	0	2,500
Acquisition of business, net of cash acquired	(136,098)	0
Proceeds from sale of property and equipment	0	10,047
Purchase of property, equipment, improvements and certain other intangible assets	(693)	(8,600)
Net cash (used in) provided by investing activities	(136,791)	3,947
Financing activities:
Proceeds from long-term debt	119,018	0
Payments on long-term debt	(40,268)	0
Payments for contingent consideration	(4,698)	(3,748)
Proceeds from stock option plan transactions	5,063	4,054
Proceeds from employee stock purchase plan transactions	798	835
Purchases of common stock	(1,692)	(1,051)
Net cash provided by financing activities	78,221	90
Effect of exchange rate changes on cash and cash equivalents	1,710	(485)
Net (decrease) increase in cash and cash equivalents	(37,707)	26,080
Cash and cash equivalents, beginning of period	92,792	58,014
Cash and cash equivalents, end of period	55,085	84,094
Supplemental schedule of non-cash investing and financing activities
Transfer of inventory to property, equipment and improvements	(1,202)	(921)
Contingent consideration recognized related to acquisition of business	(5,100)	0
Accrual for purchase of property, equipment, improvements and certain other intangible assets	$ 0	$ (7)