Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		6 Months Ended
		Mar. 31, 2019	Mar. 31, 2018
Operating Activities
Net (loss) income		$ (8,007)	$ 9,287
Adjustments to reconcile net (loss) income to net cash used in operating activities:
Depreciation and amortization		888	916
Write-down of inventory		2,794	126
Capitalized interest		106	143
Deferred income taxes		7	(23)
Non-cash share-based compensation expense		363	463
Loss (gain) on sale of property, plant and equipment		(9)	57
Income from equity method investment		0	(2)
Provision for allowance for doubtful accounts, net		1,141	48
Changes in operating assets and liabilities:
Accounts receivable		(1,533)	(3,642)
Inventories		(650)	1,644
Contract and other assets		10,143	(1,899)
Accounts payable		(650)	9,097
Accrued income taxes		216	(2,954)
Accrued and other liabilities		(378)	423
Contract liabilities		(7,516)	(31,085)
Net cash used in operating activities		(3,067)	(17,515)
Investing Activities
Purchases of property, plant and equipment		(238)	(686)
Proceeds from sale of property, plant and equipment		0	68
Net cash used in investing activities		(238)	(618)
Financing Activities
Proceeds from the exercise of stock options		37	1,340
Payments on long-term debt		(186)	(183)
Net cash (used in) provided by financing activities		(149)	1,157
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash		(903)	1,372
Net Decrease in Cash, Cash Equivalents and Restricted Cash		(4,357)	(15,604)
Cash, Cash Equivalents and Restricted Cash, Beginning of Period	[1]	62,496	75,761
Cash, Cash Equivalents and Restricted Cash, End of Period	[1]	$ 58,139	$ 60,157

[1] Includes Cash, Cash Equivalents and Restricted Cash that are included in Held-For-Sale Assets on the Condensed Consolidated Balance Sheets.