Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Operating Activities:
Net (loss) income	$ (1,556)	$ 2,300
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	1,520	1,282
Stock-based compensation	903	789
Contingent consideration expense	1,118	437
Unrealized foreign exchange loss (income)	180	(663)
Deferred taxes	1,714	742
Gain on strategic investment	(177)
Provision for bad debts	28
Other	(7)	(5)
Change in operating assets and liabilities:
Accounts receivable	484	345
Inventories	(345)	73
Prepaids and other	(1,188)	(746)
Accounts payable and accrued liabilities	(2,295)	(2,713)
Income taxes	190	82
Deferred revenue	45	28
Net cash provided by operating activities	614	1,951
Investing Activities:
Purchases of property and equipment	(1,298)	(1,545)
Purchases of available-for-sale securities	(11,364)	(12,541)
Maturities of available-for-sale securities	18,400	7,071
Net cash provided by (used in) investing activities	5,738	(7,015)
Financing Activities:
Issuance of common stock	155	13
Payments for taxes related to net share settlement of equity awards	(1,130)	(2,129)
Payment of deferred financing costs		(38)
Net cash used in financing activities	(975)	(2,154)
Effect of exchange rate changes on cash and cash equivalents	35	(116)
Net change in cash and cash equivalents	5,412	(7,334)
Cash and Cash Equivalents:
Beginning of period	16,534	24,987
End of period	21,946	17,653
Supplemental Information:
Cash paid for income taxes	12	897
Noncash transactions from investing and financing activities:
Acquisition of property and equipment on account	187	227
Strategic investment gain receivable included in other current assets	$ 177
Deferred financing costs in accounts payable		$ 45