Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands		9 Months Ended
		Jun. 30, 2019	Jun. 30, 2018
Operating Activities
Net (loss) income		$ (5,960)	$ 14,258
Adjustments to reconcile net (loss) income to net cash provided by (used in) operating activities:
Depreciation and amortization		1,280	1,622
Write-down of inventory		2,991	195
Capitalized interest		106	143
Deferred income taxes		192	206
Non-cash share-based compensation expense		474	632
Loss (gain) on sale of property, plant and equipment		1	(53)
Gain on sale of subsidiary		(1,614)	0
Gain on sale of other assets		0	(2,883)
Income from equity method investment		0	(234)
Provision for allowance for doubtful accounts, net		1,104	64
Changes in operating assets and liabilities:
Accounts receivable		630	(5,877)
Inventories		284	6,565
Contract and other assets		12,675	10,034
Accounts payable		(3,843)	(9,022)
Accrued income taxes		(1,359)	(1,742)
Accrued and other liabilities		(5,726)	39
Contract liabilities		(814)	(34,550)
Net cash provided by (used in) operating activities		421	(20,603)
Investing Activities
Purchases of property, plant and equipment		(552)	(845)
Proceeds from sale of property, plant and equipment		0	64
Costs related to sale of equity method investment		0	(6)
Net cash disposed of in sale of subsidiary		(1,112)	0
Net cash used in investing activities		(1,664)	(787)
Financing Activities
Proceeds from the exercise of stock options		175	1,889
Payments on long-term debt		(280)	(275)
Borrowings on long-term debt		9	0
Net cash (used in) provided by financing activities		(96)	1,614
Effect of Exchange Rate Changes on Cash, Cash Equivalents and Restricted Cash		(1,450)	(380)
Net Decrease in Cash, Cash Equivalents and Restricted Cash		(2,789)	(20,156)
Cash, Cash Equivalents and Restricted Cash, Beginning of Period	[1]	62,496	75,761
Cash, Cash Equivalents and Restricted Cash, End of Period	[1]	$ 59,707	$ 55,605

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