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Quarterly Financial Data (Narrative) (Details) | 3 Months Ended
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Dec. 31, 2019 owners $ / shares | Sep. 30, 2019 $ / shares | Jun. 30, 2019 $ / shares | Mar. 31, 2019 $ / shares | Dec. 31, 2018 $ / shares | Sep. 30, 2018 $ / shares | Jun. 30, 2018 $ / shares | Mar. 31, 2018 $ / shares | Dec. 31, 2017 $ / shares | Sep. 30, 2017 $ / shares | Jun. 30, 2017 $ / shares | Mar. 31, 2017 $ / shares
Quarterly Financial Data [Abstract] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring charges, per share | $ (0.04) | $ 0.01 | $ (0.02) | $ (0.01) | $ 0.04 | $ 0.06 | $ 0.06 | $ 0.18 | $ 0.07 | $ 0.11 | $ 0.04 | $ 0.05
Discrete income tax adjustments, per share | $ 0.06 | $ 0.02 | $ (0.03) | $ 0.10 | $ (0.01) | $ 0.00 | $ 0.12 | $ 0.01 | (0.21) | 0.12 | $ (0.02) | $ (0.03)
Write-off of inventory (decreased)/increased earnings per share |  |  |  |  |  |  |  |  | $ 0.01 | $ (0.06) |  |
Number of beneficial owners, including employees owning shares through the Company's 401(k) | owners | 20,000 |  |  |  |  |  |  |  |  |  |  |

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- Definition Represents the discrete income tax adjustments, increased/(decreased) earnings per share. + References No definition available. + Details
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Data Type: | num:perShareItemType
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Period Type: | duration

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- Definition Earnings Per Share, Effect Of Restructuring Charges. + References No definition available. + Details
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Namespace Prefix: | ain_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- Definition Number Of Beneficial Owners. + References No definition available. + Details
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Data Type: | xbrli:integerItemType
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X
- Definition Write-off of inventory (decreased)/increased earnings per share. + References No definition available. + Details
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Namespace Prefix: | ain_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration