Income Taxes (Deferred Tax Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Non-current deferred tax asset	$ 389	$ 7,330
Non-current deferred tax liability	(17,171)	(261)
Net deferred tax (liability) asset	(16,782)	7,069
Depreciation and amortization	(1,037)	(480)
Lease asset	(3,415)	0
Lease liability	4,477	0
Inventories	979	536
Compensation costs	3,698	3,675
Other accruals	3,985	3,870
Tax credit carryforwards	6,021	4,911
Valuation allowance	(4,372)	(3,810)
Identifiable intangible assets	(27,118)	(1,633)
Net deferred tax (liability) asset	$ (16,782)	$ 7,069

Deferred Tax Assets, Tax Deferred Expense, Other Accruals

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Amount, after deferred tax asset, of deferred tax liability attributable to taxable differences with jurisdictional netting.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from inventory.

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Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, without jurisdictional netting.

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Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards.

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Amount, before allocation of a valuation allowances, of deferred tax assets attributable to deductible tax credit carryforwards including, but not limited to, research, foreign, general business, alternative minimum tax, and other deductible tax credit carryforwards.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from compensation and benefits costs.

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Amount before allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences from deferred rent.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Amount of deferred tax liability attributable to taxable temporary differences from intangible assets other than goodwill.

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Amount of deferred tax liability attributable to taxable temporary differences from leasing arrangements.

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Amount of deferred tax liability attributable to taxable temporary differences from property, plant, and equipment.

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