Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		3 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Operating Activities
Net income (loss)		$ 719	$ (1,932)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation and amortization		325	406
Write-down of inventory		48	311
Deferred income taxes			784
Non-cash share-based compensation expense		65	68
Loss on sale of subsidiary			2,793
Provision for (reversal of) allowance for doubtful accounts, net		5	(59)
Other, net		3	13
Changes in operating assets and liabilities:
Accounts receivable		(2,702)	3,296
Inventories		613	1,025
Other assets		20	(1,458)
Accounts payable		738	(1,983)
Accrued income taxes		34	(1,616)
Accrued and other liabilities		304	(486)
Contract liabilities		(68)	(1,330)
Net cash provided by (used in) operating activities		104	(168)
Investing Activities
Purchases of property, plant and equipment		(198)	(173)
Net cash disposed of in sale of subsidiary			(647)
Net cash used in investing activities		(198)	(820)
Financing Activities
Proceeds from the exercise of stock options		135	701
Payments on long-term debt		(93)	(103)
Net cash provided by financing activities		42	598
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash		596	1,141
Net Increase in Cash, Cash Equivalents and Restricted Cash		544	751
Cash, Cash Equivalents and Restricted Cash, Beginning of Period	[1]	45,070	59,134
Cash, Cash Equivalents and Restricted Cash, End of Period	[1]	$ 45,614	$ 59,885

[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.