Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating Activities:
Net (loss) income	$ (2,704)	$ 3,526
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	4,711	4,006
Stock-based compensation	3,297	2,620
Contingent consideration gain	(1,006)	(803)
Unrealized foreign exchange (gain) loss	(74)	127
Acquired in-process research and development	7,888
Deferred taxes	(1,954)	1,954
Gain on strategic investment	(177)
Provision for bad debts	33	128
Other	19	(1)
Change in operating assets and liabilities:
Accounts receivable	(1,142)	(243)
Inventories	(465)	88
Prepaids and other	(2,107)	(2,091)
Accounts payable and accrued liabilities	870	(1,129)
Income taxes	(869)	(558)
Deferred revenue	22,902	32
Net cash provided by operating activities	29,222	7,656
Investing Activities:
Purchases of property and equipment	(6,915)	(4,881)
Purchases of available-for-sale securities	(59,578)	(54,935)
Maturities of available-for-sale securities	56,581	44,571
Cash proceeds from sales of property and equipment	4
Cash received from sale of strategic investment	177
Purchase of in-process research and development (Note 16)	(4,500)
Net cash used in investing activities	(14,231)	(15,245)
Financing Activities:
Issuance of common stock	1,387	216
Payments for taxes related to net share settlement of equity awards	(4,356)	(2,128)
Payment of contingent consideration obligations	(925)
Repurchase of common stock		(4,046)
Payment of deferred financing costs		(96)
Net cash used in financing activities	(3,894)	(6,054)
Effect of exchange rate changes on cash and cash equivalents	(8)	6
Net change in cash and cash equivalents	11,089	(13,637)
Cash and Cash Equivalents:
Beginning of period	16,534	24,987
End of period	27,623	11,350
Supplemental Information:
Cash paid for income taxes	893	1,889
Noncash transactions from investing and financing activities:
Acquisition of property and equipment, net of refundable credits in other current assets and liabilities	965	$ 112
Acquisition of in process research and development in other current and long-term liabilities	$ 3,388