Amount paid to terminate agreement.

No definition available.

Name:	ain_AmountPaidToTerminateAgreement
Namespace Prefix:	ain_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Covenant, Maximum Leverage Ratio.

+ References

No definition available.

+ Details

Name:	ain_CovenantMaximumLeverageRatio
Namespace Prefix:	ain_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Covenant, Minimum Interest Coverage Ratio.

+ References

No definition available.

+ Details

Name:	ain_CovenantMinimumInterestCoverageRatio
Namespace Prefix:	ain_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Debt Instrument Payment Required On Tenth Anniversary.

+ References

No definition available.

+ Details

Name:	ain_DebtInstrumentPaymentRequiredOnTenthAnniversary
Namespace Prefix:	ain_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The reference rate for the variable rate of the debt instrument, such as LIBOR or the US Treasury rate.

+ References

No definition available.

+ Details

Name:	ain_DebtInstrumentVariableRateBasis
Namespace Prefix:	ain_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Interest Coverage Ratio.

+ References

No definition available.

+ Details

Name:	ain_InterestCoverageRatio
Namespace Prefix:	ain_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Leverage Ratio.

+ References

No definition available.

+ Details

Name:	ain_LeverageRatio
Namespace Prefix:	ain_
Data Type:	xbrli:decimalItemType
Balance Type:	na
Period Type:	instant

- Definition

Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Article 12
-Section 13
-Sentence Column B

+ Details

Name:	invest_DerivativeNotionalAmount
Namespace Prefix:	invest_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- 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.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format.

+ References

+ Details

Name:	us-gaap_DebtInstrumentMaturityDate
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Fixed interest rate related to the interest rate derivative.

+ References

No definition available.

+ Details

Name:	us-gaap_DerivativeFixedInterestRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(22))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(16))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03(16))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

+ Details

Name:	us-gaap_LineOfCredit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

+ Details

Name:	us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

+ References

No definition available.

+ Details

Name:	us-gaap_LongTermDebtFairValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_NotesPayableToBanksMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DerivativeInstrumentRiskAxis=us-gaap_InterestRateSwapMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_BusinessAcquisitionAxis=ain_AacMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Financial Instruments (Narrative) (Details) - USD ($) $ in Thousands		9 Months Ended
	Sep. 25, 2017	Sep. 30, 2017	Sep. 18, 2017	Dec. 31, 2016	May 09, 2016	May 06, 2016	Apr. 08, 2016	Jun. 18, 2015
Debt Instrument [Line Items]
Maximum leverage ratio allowed		3.50
Minimum interest coverage ratio required		3.00
Leverage ratio		2.55
Interest coverage ratio		9.38
Private Placement, Notes [Member]
Debt Instrument [Line Items]
Interest rate		6.84%
Maturity date		Oct. 25, 2017
Payment required on October 25, 2017		$ 50,000
Fair value of long-term debt		$ 50,900
Credit Agreement [Member]
Debt Instrument [Line Items]
Interest rate		2.74%		2.58%
Amount of credit facility							$ 550,000	$ 400,000
Amount of credit facility outstanding		$ 440,000
Additional amount that can be borrowed on facility		$ 110,000
LIBOR spread	1.50%
Credit Agreement [Member] \| Minimum [Member]
Debt Instrument [Line Items]
LIBOR spread		1.25%
Credit Agreement [Member] \| Maximum [Member]
Debt Instrument [Line Items]
LIBOR spread		1.75%
Interest Rate Current Swap [Member] \| Credit Agreement [Member]
Debt Instrument [Line Items]
Borrowings, revolving credit facility						$ 120,000
Notional amount			$ 300,000		$ 300,000
Fixed interest rate in swap			2.745%		1.245%
LIBOR rate			1.245%
Amount paid to terminate agreement						$ 5,200
AAC [Member]
Debt Instrument [Line Items]
Interest rate		5.00%
Maturity date		Dec. 31, 2022