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Consolidated Statements of Income (Parenthetical) | Sep. 25, 2020
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Income Statement [Abstract] |
Stock dividend, percent | 3.00%

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- Definition Stock Dividend, Percent + References No definition available. + Details
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Namespace Prefix: | arow_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- References No definition available. + Details
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Balance Type: | na
Period Type: | duration