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Pensions and Other Postretirement Benefit Plans (Narrative) (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2014
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United States [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Accrued postretirement liability | $ 63.9 us-gaap_OtherPostretirementBenefitsPayableCurrentAndNoncurrent / us-gaap_StatementGeographicalAxis = country_US
Canada [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Accrued postretirement liability | $ 1.1 us-gaap_OtherPostretirementBenefitsPayableCurrentAndNoncurrent / us-gaap_StatementGeographicalAxis = country_CA
United States Pension Plan [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Percent of consolidated pension plan assets | 44.00%ain_DefinedBenefitPlanWeightedAveragePlanAssets / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
Percent of consolidated pension plan obligations | 42.00%ain_DefinedBenefitPlanWeightedAveragePensionObligations / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember

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- Definition Defined Benefit Plan, Weighted Average Pension Obligations. + References No definition available. + Details
Name: | ain_DefinedBenefitPlanWeightedAveragePensionObligations
Namespace Prefix: | ain_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Definition Defined Benefit Plan, Weighted Average Plan Assets. + References No definition available. + Details
Name: | ain_DefinedBenefitPlanWeightedAveragePlanAssets
Namespace Prefix: | ain_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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- Details
Name: | us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The total amount of the entity's obligation as of the balance sheet date under any other retirement plan(s), such as one or more defined contribution plans. + References No definition available. + Details
Name: | us-gaap_OtherPostretirementBenefitsPayableCurrentAndNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
Name: | us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=us-gaap_UnitedStatesPensionPlansOfUSEntityDefinedBenefitMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_StatementGeographicalAxis=country_CA
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementGeographicalAxis=country_US
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |