Income Taxes (Tables)

12 Months Ended

Sep. 30, 2022

Income Taxes

Schedule of components of income before provision for income taxes

	Year Ended September 30,
	2020		2021		2022
Income (loss) before income taxes:
U.S.	$	(9,831)	$	(11,417)	$	38,864
Foreign		2,333		1,634		18,750
Total	$	(7,498)	$	(9,783)	$	57,614
Provision for (benefit from) income taxes:
Current:
U.S. Federal	$	(371)	$	741	$	2,031
Foreign		541		349		3,302
State		29		228		639
Total		199		1,318		5,972
Deferred:
U.S. Federal		(2,266)		(2,986)		5,931
Foreign		56		470		120
State		(810)		(317)		(300)
Valuation allowance		1,801		415		804
Total		(1,219)		(2,418)		6,555
Total provision for (benefit from) income taxes	$	(1,020)	$	(1,100)	$	12,527

Schedule of provision for income taxes applicable to results of operations differed from the U.S. federal statutory rate

	Year Ended September 30,
	2020			2021			2022
Statutory federal tax rate		21.00	%		21.00	%		21.00	%
Tax provision for income taxes at the statutory rate	$	(1,575)		$	(2,054)		$	12,099
Foreign tax rate differentials		107			(59)			(307)
Provision for state taxes, net of federal taxes		(145)			(84)			974
U.S. tax on distributed and undistributed earnings of foreign subsidiaries		(289)			198			984
Foreign derived intangible income deduction		—			—			(966)
Tax credits		(1,058)			(691)			(702)
Federal and state tax rate change impact on deferred tax asset		(60)			790			(206)
Change in valuation allowance		1,801			415			804
Stock compensation		24			138			191
Other, net		175			247			(344)
Provision for (benefit from) income taxes at effective tax rate	$	(1,020)		$	(1,100)		$	12,527
Effective tax rate		13.6	%		11.2	%		21.7	%

Schedule of deferred tax assets (liabilities)

	September 30,
	2021		2022
Deferred tax assets:
Pension and postretirement benefits	$	22,318	$	16,802
TIMET Agreement		2,976		2,396
Inventories		1,498		3,225
Accrued compensation and benefits		2,034		2,096
Accrued expenses and other		3,376		2,600
Tax attributes		11,638		5,625
Other assets		299		250
Valuation allowance		(3,891)		(4,695)
Total deferred tax assets	$	40,248	$	28,299
Deferred tax liabilities:
Property, plant and equipment, net	$	(25,669)	$	(24,081)
Intangible and other		(1,296)		(1,414)
Other liabilities		(345)		(227)
Total deferred tax liabilities	$	(27,310)	$	(25,722)
Net deferred tax assets (liabilities)	$	12,938	$	2,577