Business Acquisition (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended	12 Months Ended
	Apr. 08, 2016	Dec. 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Jun. 18, 2015
Business Acquisition [Line Items]
Cash consideration for acquisition			$ 187,000
Goodwill		$ 160,375	160,375	66,373	71,680
Property, plant and equipment decrease			$ 58,106	$ 52,974	$ 56,575
Albany Aerostructures Composites LLC (AAC) [Member]
Business Acquisition [Line Items]
Goodwill	$ 95,730
Goodwil increase		28,700
Amortizable intangible assets increase		12,300
Noncurrent liabilities increase		10,400
Deferred tax liabilities increase		7,800
Other liabilities increase		2,600
Property, plant and equipment decrease		18,900
Other assets decrease		1,300
Income before income taxes		$ 100
Harris Corporation's Composite Aerostructures Division [Member]
Business Acquisition [Line Items]
Cash consideration for acquisition	187,000
Goodwill	95,700
Credit Agreement [Member]
Business Acquisition [Line Items]
Proceeds from unsecured credit facility agreement	$ 550,000					$ 40,000