Debt Narrative - Senior Secured Notes and Revolving Credit Facility - Food Packaging (Details) (USD $)	12 Months Ended			12 Months Ended			3 Months Ended							12 Months Ended
	Dec. 31, 2013 Automotive Segment [Member] Debt Facility [Member] Revolving Credit Facility [Member]	Dec. 31, 2013 Automotive Segment [Member] Debt Facility [Member] Letter of Credit [Member]	Dec. 31, 2012 Automotive Segment [Member] Debt Facility [Member] Letter of Credit [Member]	Dec. 31, 2013 Food Packaging Segment [Member] Secured Debt [Member] Viskase Notes Indenture [Member]	May 31, 2010 Food Packaging Segment [Member] Secured Debt [Member] Viskase Notes Indenture [Member]	Dec. 31, 2009 Food Packaging Segment [Member] Secured Debt [Member] Viskase Senior Secured Notes due 2018 [Member]	Mar. 31, 2014 Food Packaging Segment [Member] Secured Debt [Member] Viskase Senior Secured Notes due 2021 [Member]	Jan. 30, 2014 Food Packaging Segment [Member] Secured Debt [Member] Viskase Senior Secured Notes due 2021 [Member]	Dec. 31, 2012 Food Packaging Segment [Member] Secured Debt [Member] Revolving Credit Facility [Member]	Dec. 31, 2013 Food Packaging Segment [Member] Secured Debt [Member] Letter of Credit [Member]	Dec. 31, 2012 Food Packaging Segment [Member] Secured Debt [Member] Letter of Credit [Member]	Dec. 31, 2013 Food Packaging Segment [Member] Unsecured Debt [Member] Line of Credit [Member]	Dec. 31, 2012 Food Packaging Segment [Member] Unsecured Debt [Member] Line of Credit [Member]	Dec. 31, 2013 Debt repurchase date range, Prior to January 15, 2014 [Member] Food Packaging Segment [Member] Secured Debt [Member] Viskase Notes Indenture [Member]
Debt Instrument [Line Items]
Line of credit, refinancing indebtedness due, period	91 days
Aggregate principal amount issued, long-term debt					$ 40,000,000	$ 175,000,000		$ 275,000,000				$ 2,000,000
Interest rate, long-term debt					9.875%	9.875%
Redemption percentage of aggregate principal amount authorized to be redeemed at higher percenatge of principal amount				35.00%
Redemption percentage of principal amount														109.875%
Percentage of aggregate principal amount required to remain outstanding if debt redeemed at higher percenatge of principal amount				65.00%
Loss on extinguishment of debt							16,000,000
Line of credit facility												8,000,000
Line of credit facility, outstanding borowings		39,000,000	37,000,000						0				0
Letters of Credit Outstanding, Amount										$ 1,000,000	$ 1,000,000