Income Taxes (Tables)

12 Months Ended

Sep. 30, 2018

Income Taxes

Schedule of components of income before provision for income taxes

	Year Ended September 30,
	2016		2017		2018
Income (loss) before income taxes:
U.S.	$	(4,160)	$	(25,090)	$	(16,650)
Foreign		7,911		7,873		12,596
Total	$	3,751	$	(17,217)	$	(4,054)
Provision for (benefit from) income taxes:
Current:
U.S. Federal	$	(4,427)	$	933	$	(7,690)
Foreign		1,368		1,652		2,404
State		(141)		401		(137)
Total		(3,200)		2,986		(5,423)
Deferred:
U.S. Federal		4,582		(8,781)		25,141
Foreign		(105)		—		—
State		(2,954)		(1,427)		(2,496)
Valuation allowance		408		195		475
Total		1,931		(10,013)		23,120
Total provision for (benefit from) income taxes	$	(1,269)	$	(7,027)	$	17,697

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

	Year Ended September 30,
	2016			2017			2018
Statutory federal tax rate		35.00	%		35.00	%		24.53	%
Tax provision for income taxes at the statutory rate	$	1,313		$	(6,026)		$	(1,059)
Foreign tax rate differentials		(1,505)			(1,103)			(685)
Provision for state taxes, net of federal taxes		778			(371)			(45)
U.S. tax on distributed and undistributed earnings of foreign subsidiaries		523			452			240
Manufacturer’s deduction		(98)			—			(86)
Tax credits		(1,198)			(409)			(511)
Transition tax		—			—			2,170
Federal and state tax rate change impact on deferred tax asset		(1,819)			192			16,633
Net operating loss carryback		—			—			407
Change in valuation allowance		408			195			475
Other, net		329			43			158
Provision for income taxes at effective tax rate	$	(1,269)		$	(7,027)		$	17,697
Effective tax rate		(33.8)	%		40.8	%		(436.5)	%

Schedule of deferred tax assets (liabilities)

	September 30,
	2017		2018
Deferred tax assets:
Pension and postretirement benefits	$	74,602	$	38,343
TIMET Agreement		8,417		4,775
Inventories		2,080		2,091
Accrued compensation and benefits		2,107		1,387
Accrued expenses and other		5,277		2,977
Tax attributes		11,579		4,178
Valuation allowance		(1,017)		(1,661)
Total deferred tax assets	$	103,045	$	52,090
Deferred tax liabilities:
Property, plant and equipment, net	$	(45,155)	$	(27,521)
Intangible and other		(1,498)		(1,034)
Total deferred tax liabilities	$	(46,653)	$	(28,555)
Net deferred tax assets (liabilities)	$	56,392	$	23,535