Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		6 Months Ended
		Mar. 31, 2020	Mar. 31, 2019
Operating Activities
Net loss		$ (13,626)	$ (8,007)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities:
Depreciation and amortization		694	888
Write-down of inventory		330	2,794
Deferred income taxes		784	7
Non-cash share-based compensation expense		133	363
Loss on sales of subsidiaries		13,709
(Reversal of) provision for allowance for doubtful accounts, net		(32)	1,141
Other, net		4	115
Changes in operating assets and liabilities:
Accounts receivable		1,374	(1,533)
Inventories		(527)	(650)
Other assets		3,667	10,143
Accounts payable		(1,849)	(650)
Accrued income taxes		(2,094)	216
Accrued and other liabilities		(228)	(378)
Contract liabilities		(1,063)	(7,516)
Net cash provided by (used in) operating activities		1,276	(3,067)
Investing Activities
Purchases of property, plant and equipment		(345)	(238)
Net cash disposed of in sales of subsidiaries		(9,940)
Net cash used in investing activities		(10,285)	(238)
Financing Activities
Proceeds from the exercise of stock options		779	37
Repurchase of common stock		(2,000)
Payments on long-term debt		(194)	(186)
Net cash used in financing activities		(1,415)	(149)
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash		558	(903)
Net Decrease in Cash, Cash Equivalents and Restricted Cash		(9,866)	(4,357)
Cash, Cash Equivalents and Restricted Cash, Beginning of Period	[1]	59,134	62,496
Cash, Cash Equivalents and Restricted Cash, End of Period	[1]	$ 49,268	$ 58,139

[1] Includes Cash, Cash Equivalents and Restricted Cash that are included in Held-For-Sale Assets on the Condensed Consolidated Balance Sheets for periods prior to January 22, 2020.