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Income Taxes (Tables)

12 Months Ended

Sep. 30, 2021

Income Tax Disclosure [Abstract]

Provision for Income Taxes

The provision for income taxes was as follows during fiscal 2021, 2020 and 2019: 

			Year ended September 30,
			2021						2020						2019
			(In thousands)
Current:
Federal			$	43,437					$	14,566					$	1,299
State			7,961						2,180						(423)
Foreign			35,615						12,482						15,371
			87,013						29,228						16,247
Deferred:
Federal			(4,602)						(8,575)						7,003
State			(948)						(957)						947
Foreign			(405)						893						(249)
			(5,955)						(8,639)						7,701
Total provision			$	81,058					$	20,589					$	23,948

Deferred Tax Assets and Liabilities

Deferred tax assets and liabilities at September 30, 2021 and 2020 were as follows: 

			September 30,
			2021						2020
			(In thousands)
Deferred tax assets:
Loss and credit carryforwards			$	30,311					$	31,015
Compensation benefits			29,305						29,640
Operating lease liabilities			17,076						21,827
Other assets			16,711						9,000
			93,403						91,482
Less: valuation allowance			(28,403)						(24,563)
Total deferred tax assets			65,000						66,919
Deferred tax liabilities:
Intangible assets			(10,518)						(14,715)
Deferred commission			(10,520)						(9,027)
Property and equipment			(487)						(3,135)
Operating lease right-of-use assets			(11,258)						(13,719)
Other liabilities			(11,668)						(11,694)
Total deferred tax liabilities			(44,451)						(52,290)
Deferred tax assets, net			$	20,549					$	14,629

Reconciliation Between Federal Statutory Income Tax Rate and Effective Tax Rate

A reconciliation of the provision for income taxes, with the amount computed by applying the U.S. federal statutory income tax rate of 21% to income before provision for income taxes for fiscal 2021, 2020 and 2019 is shown below:

			Year Ended September 30,
			2021						2020						2019
			(In thousands)
Income tax provision at U.S. federal statutory rate			$	99,360					$	53,970					$	45,375
State income taxes, net of U.S. federal benefit			7,815						4,619						4,194
Foreign tax rate differential			1,490						493						839
Research credits			(6,795)						(5,868)						(5,761)
Valuation allowance			3,839						5,332						(333)
Excess tax benefits relating to share-based compensation			(15,573)						(45,086)						(24,891)
GILTI, FDII and BEAT			(4,958)						7,136						1,467
Other			(4,120)						(7)						3,058
Recorded income tax provision			$	81,058					$	20,589					$	23,948

Reconciliation of Beginning and Ending Amount of Unrecognized Tax Benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits is as follows: 

			Year Ended September 30,
			2021						2020						2019
			(In thousands)
Gross unrecognized tax benefits at beginning of year			$	7,994					$	5,834					$	6,113
Gross increases for tax positions in prior years			—						883						509
Gross decreases for tax positions in prior years			(385)						(65)						(611)
Gross increases based on tax positions related to the current year			5,273						2,260						1,439
Decreases for settlements and payments			(643)						—						(637)
Decreases due to statute expiration			(1,342)						(918)						(979)
Gross unrecognized tax benefits at end of year			$	10,897					$	7,994					$	5,834

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Tabular disclosure of the components of income tax expense attributable to continuing operations for each year presented including, but not limited to: current tax expense (benefit), deferred tax expense (benefit), investment tax credits, government grants, the benefits of operating loss carryforwards, tax expense that results from allocating certain tax benefits either directly to contributed capital or to reduce goodwill or other noncurrent intangible assets of an acquired entity, adjustments of a deferred tax liability or asset for enacted changes in tax laws or rates or a change in the tax status of the entity, and adjustments of the beginning-of-the-year balances of a valuation allowance because of a change in circumstances that causes a change in judgment about the realizability of the related deferred tax asset in future years.

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Tabular disclosure of the components of net deferred tax asset or liability recognized in an entity's statement of financial position, including the following: the total of all deferred tax liabilities, the total of all deferred tax assets, the total valuation allowance recognized for deferred tax assets.

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Tabular disclosure of the reconciliation using percentage or dollar amounts of the reported amount of income tax expense attributable to continuing operations for the year to the amount of income tax expense that would result from applying domestic federal statutory tax rates to pretax income from continuing operations.

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Tabular disclosure for tax positions taken in the tax returns filed or to be filed for which it is more likely than not that the tax position will not be sustained upon examination by taxing authorities and other income tax contingencies. Includes, but is not limited to, interest and penalties, reconciliation of unrecognized tax benefits, unrecognized tax benefits that would affect the effective tax rate, tax years that remain subject to examination by tax jurisdictions, and information about positions for which it is reasonably possible that amounts unrecognized will significantly change within 12 months.

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