The increase (decrease) during the reporting period in the aggregate amount of assets used to generate operating income.

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The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

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- Definition

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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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.

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Reportable Segments (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Net sales	$ 229,981	$ 199,277
Albany Safran Composites, LLC [Member]
Segment Reporting Information [Line Items]
Net sales	40,800	25,400
Invoiced receivables, unbilled receivables and contract receivables	90,000		$ 58,600
Machine Clothing [Member]
Segment Reporting Information [Line Items]
Net sales	$ 148,151	$ 142,827
Increase decrease in assets			22,000
AEC assets [Member]
Segment Reporting Information [Line Items]
Increase decrease in assets			$ (13,000)