Business and Credit Concentrations (Details)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Net sales to foreign customers outside the U.S. and Canada
Schedule of significant portions of the Company's net sales
Net sales, percentage	37.00%	40.00%	29.00%
Net sales to SANG
Schedule of significant portions of the Company's net sales
Net sales, percentage	12.00%	11.00%
Net sales to General Dynamics Land Systems-Canada
Schedule of significant portions of the Company's net sales
Net sales, percentage			11.00%