Unaudited Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Operating activities
Net loss	$ (1,212)	$ (8,397)
Adjustments to reconcile net loss to net cash (used) provided by operating activities:
Depreciation and amortization	1,211	1,429
Stock compensation expense	930	2,500
Adjustment related to the adoption of ASU 2016-09	(113)	0
Provision for inventory allowance	1,841	715
Provision for doubtful accounts	16	84
Deferred tax benefit	(5,017)	0
Change in fair value of financial instruments	110	(928)
Changes in operating assets and liabilities:
Accounts receivable	4,140	(440)
Inventory	1,842	151
Prepaid and deferred taxes	(51)	(9)
Prepaid expenses and other assets	4,714	773
Accounts payable	(1,590)	(552)
Accrued expenses and other current liabilities	(3,549)	(2,922)
Distributions payable	(693)	2,967
Payables to sellers	995	(11)
Other liabilities	(78)	(381)
Net cash provided (used) by operating activities	3,496	(5,021)
Investing activities
Increase in intangibles	(18)	(7)
Purchases of property and equipment, including capitalized software	(948)	(2,321)
Net cash used in investing activities	(966)	(2,328)
Financing activities
Proceeds from exercise of common stock options (net of tax)	0	32
Net cash provided by financing activities	0	32
Effect of exchange rate differences on cash and cash equivalents	(112)	(282)
Net increase (decrease) in cash and cash equivalents	2,418	(7,599)
Cash and cash equivalents at beginning of period	94,348	134,513
Cash and cash equivalents at end of period	96,766	126,914
Supplemental disclosure of cash flow information
Cash paid (received) for income taxes, net	$ 251	$ (209)