Subsequent Events (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2013	Dec. 31, 2013 Reduction in Taxes [Member]
Subsequent Events [Abstract]
Subsequent Event, Description	During 2002 and 2003, the Company’s Netherlands and Italian subsidiaries paid excise taxes on mineral oil sales in Italy for a total amount of approximately $2,000. Alleging that the mineral oil excise tax was contrary to European Union directives, the subsidiaries filed with the Customs’ Authority of Milan (“Customs Office” or “Office”) requests to obtain a refund of the above-mentioned amount. The parties appealed rulings to various levels of tax courts up through the Supreme Court of Italy. In March 2012, the Supreme Court rejected the appeal of the Customs Office, ruling in favor of the subsidiaries and granting a refund for the amounts requested.
Other Income [Line Items]
Other Income		$ 2,000