Income Taxes (Tables)

12 Months Ended

Sep. 30, 2017

Income Tax Disclosure [Abstract]

Components Of Income Before Income Taxes

The components of income (loss) before income taxes were as follows:

(in thousands)	2017			2016		2015
Domestic	$	(9,658	)	$	5,345	$	31,827
Foreign	32,669			28,167		27,345
Total income (loss) before income taxes	$	23,011		$	33,512	$	59,172

Provision For Income Taxes

The income tax provision (benefit) was as follows:

(in thousands)	2017			2016			2015
Current
Federal	$	(1,493	)	$	3,169		$	4,588
State	156			138			527
Foreign	11,980			6,712			8,025
Deferred	(12,716		)	(4,001		)	570
Income tax provision (benefit)	$	(2,073	)	$	6,018		$	13,710

Reconciliation From The Federal Statutory Income Tax Rate To The Effective Income Tax Rate

A reconciliation from the U.S. federal statutory income tax rate to our effective income tax rate is as follows:

(in thousands)	2017		2016		2015
U.S. federal statutory income tax rate	35	%	35	%	35	%
Impact from foreign operations	(10	)	(5	)	(4	)
State income taxes, net of federal benefit	(1	)	—		1
R&D tax credits	(22	)	(16	)	(8	)
Domestic production activities deduction	(10	)	(2	)	(2	)
Foreign tax credits	—		—		—
Acquisition costs	(3	)	5		—
Nondeductible stock option expense and other permanent items	2		1		1
Effective income tax rate	(9	)%	18	%	23	%

Summary Of The Deferred Tax Assets And Liabilities

A summary of the deferred tax assets and liabilities are as follows:

(in thousands)	2017			2016
Deferred tax assets
Accrued compensation and benefits	$	13,841		$	15,888
Inventory reserves	6,550			6,128
Other assets	4,920			4,685
Allowance for doubtful accounts	1,766			1,488
Net operating loss carryovers	227			140
State and foreign tax credit carryovers	3,358			1,249
Research and development tax credit carryovers	2,231			1,540
Unrealized derivative instrument gains	—			185
Total deferred tax asset before valuation allowance	32,893			31,303
Less valuation allowance	(3,487		)	(3,009		)
Total deferred tax assets	29,406			$	28,294
Deferred tax liabilities
Property and equipment	13,382			$	15,128
Foreign deferred revenue and other	3,009			3,320
Intangible assets	83,207			90,450
Unrealized derivative instrument gains	1,233			—
Total deferred tax liabilities	100,831			$	108,898
Net deferred tax assets (liabilities)	$	(71,425	)	$	(80,604	)

Summary Of Changes In Liability For Unrecognized Tax Benefits

A summary of changes to our liability for unrecognized tax benefits is as follows:  

(in thousands)	2017			2016
Beginning liability for unrecognized tax benefits	$	6,232		$	5,649
Increase due to tax positions related to the current year	852			269
Increase (decrease) due to tax positions related to prior years	189			500
Decrease due to settlements with tax authorities	(493		)	—
Decrease due to lapse of statute of limitations	(931		)	(186		)
Exchange rate change	—			—
Ending liability for unrecognized tax benefits	$	5,849		$	6,232