Contract Assets and Liabilities (Schedule of Contract Assets and Contract Liabilities) (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Contract Assets And Liabilities
Contract assets	$ 59,244
Contract liabilities	$ 4,220

Amount of current liabilities related to contracts.

No definition available.

Name:	ain_ContractLiabilitiesCurrent
Namespace Prefix:	ain_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant