Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2017
Operating activities
Net loss	$ (19,260)	$ (11,615)	$ (39,187)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization	5,091	4,599	5,796
Change in fair value of earnout liability	3,500	100	(954)
Stock compensation expense	6,508	6,597	7,377
Inventory adjustment to net realizable value	331	2,494	10,381
Provision for doubtful accounts	178	199	357
Deferred tax expense (benefit)	136	(10,945)	(620)
Impairment of goodwill and long-lived assets	0	0	1,963
Change in fair value of financial instruments	0	90	(573)
Incremental tax loss from exercise of common stock options and restricted stock	0	0	1,198
Gain on disposal of property and equipment	(15)	(480)	0
Changes in operating assets and liabilities:
Accounts receivable	(2,012)	6,582	(1,611)
Inventory	3,948	8,120	(3,507)
Prepaid and deferred taxes	(811)	739	730
Prepaid expenses and other assets	1,554	(689)	(1,024)
Accounts payable	1,191	670	3,192
Accrued expenses and other current liabilities	1,999	(9,576)	(14,882)
Distributions payable	(453)	(953)	1,359
Deferred revenue	906	743	0
Payables to sellers	(8,716)	4,586	(4,519)
Other liabilities	(317)	(642)	2,871
Net cash (used in) provided by operating activities	(6,242)	619	(31,653)
Investing activities
Increase in intangibles	(23)	(35)	(119)
Purchases of property and equipment, including capitalized software	(5,938)	(4,174)	(7,805)
Proceeds from note receivable	0	3,000	0
Proceeds from sale of property and equipment	247	828	0
Purchase of short-term investments	(70,000)	(20,000)	0
Maturities of short-term investments	60,000	0	0
Cash paid for business acquisition, net of cash acquired	0	(16,673)	0
Net cash used in investing activities	(15,714)	(37,054)	(7,924)
Financing activities
Short-term borrowings, net	0	0	0
Proceeds from exercise of common stock options (net of tax)	590	404	92
Taxes paid associated with net settlement of share-based compensation	(44)	0	0
Incremental tax loss from exercise of common stock options and restricted stock	0	0	(1,198)
Net cash provided by (used in) financing activities	546	404	(1,106)
Effect of exchange rate differences on cash and cash equivalents	(541)	131	518
Net (decrease) increase in cash and cash equivalents	(21,951)	(35,900)	(40,165)
Cash and cash equivalents at beginning of year	58,448	94,348	134,513
Cash and cash equivalents at end of year	36,497	58,448	94,348
Supplemental disclosure of cash flow information
Earnout liability for acquisition activity	0	1,200	0
Issuance of common stock for acquisition activity	0	2,005	0
Cash (paid) received for income taxes, net	$ (1,008)	$ (916)	$ 793