Related Party Transactions (Details) (USD $) In Thousands, unless otherwise specified		12 Months Ended
Jan. 31, 2011 Joint venture in Poland	Dec. 31, 2012 Schooner Capital LLC	Dec. 31, 2011 Schooner Capital LLC	Dec. 31, 2010 Schooner Capital LLC	Dec. 31, 2012 One of the members of board of directors and several of his family members Joint venture in Poland
Related Party Transactions
Rental income		$ 196	$ 188	$ 198
Percentage of purchase price receivable	24.00%				24.00%

Income earned by providing the use of assets to an outside party in exchange for a payment or series of payments that is nonoperating in nature.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.7)

-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Name:	us-gaap_RentalIncomeNonoperating
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration