Change In Accounting Estimate, Increase (Decrease) Depreciation Expense

No definition available.

Name:	acel_ChangeInAccountingEstimateIncreaseDecreaseDepreciationExpense
Namespace Prefix:	acel_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Change In Accounting Estimate, Increase (Decrease) Net Income (Loss).

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No definition available.

+ Details

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Namespace Prefix:	acel_
Data Type:	xbrli:monetaryItemType
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- Definition

Change In Accounting Estimate, Increase (Decrease) To Net Loss Per Share.

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No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Namespace Prefix:	us-gaap_
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- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Summary of Significant Accounting Policies - Change in estimate (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended	12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Video Game Terminals and Equipment [Member]
Change in Accounting Estimate [Line Items]
Useful life				7 years
Service Life
Change in Accounting Estimate [Line Items]
Decrease in depreciation expense	$ 1,898		$ 4,511
Decrease to net loss	$ 1,533		$ 3,687
Decrease to loss per share	0.02		0.05
Service Life \| Video Game Terminals and Equipment [Member]
Change in Accounting Estimate [Line Items]
Useful life		10 years	10 years	7 years