Operating Segments and Related Information (Accounts Receivable Narrative) (Details)	Dec. 31, 2012 customers	Dec. 31, 2011 customers
Accounts, Notes, Loans and Financing Receivable [Line Items]
The Number Of Customers That Account for 10% or Greater of the Company's Accounts Receivables	1	3
Customer B [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage Of Total Trade Receivables	24.00%
Customer C [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage Of Total Trade Receivables		19.00%
Customer D [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage Of Total Trade Receivables		12.00%
Customer E [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percentage Of Total Trade Receivables		10.00%