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Shareholders' Equity (Warrants, Narrative) (Details)
 12 Months Ended 12 Months Ended 12 Months Ended 12 Months Ended
Dec. 31, 2003
Warrants, Issued in Consideration to 2003 Credit Facility Amendment
Dec. 31, 2012
Warrants, Issued in Consideration to 2003 Credit Facility Amendment
Dec. 31, 2011
Warrants, Issued in Consideration to 2003 Credit Facility Amendment
Dec. 31, 2004
Warrants, Issued to Related Party in 2004
Dec. 31, 2012
Warrants, Issued to Related Party in 2004
Dec. 31, 2011
Warrants, Issued to Related Party in 2004
Dec. 31, 2006
Warrants, Issued in Consideration of 2006 Credit Facility Amendment
Dec. 31, 2012
Warrants, Issued in Consideration of 2006 Credit Facility Amendment
Dec. 31, 2011
Warrants, Issued in Consideration of 2006 Credit Facility Amendment
Dec. 31, 2009
Warrants, Issued in Consideration of 2009 Credit Facility Amendment
Dec. 31, 2012
Warrants, Issued in Consideration of 2009 Credit Facility Amendment
Dec. 31, 2011
Warrants, Issued in Consideration of 2009 Credit Facility Amendment
Class of Warrant or Right [Line Items]                        
Warrants, number of shares called by warrants 25,000     40,000     3,958     7,500    
Warrants, exercise price 6.00     6.00     9.00     17.00    
Warrants, exerciseable period 10 years     10 years                
Warrants, expiration date             Apr. 30, 2016     Jul. 31, 2019    
Warrants, outstanding, shares   25,000 25,000   40,000 40,000   3,958 3,958   7,500 7,500
Warrants, exerciseable, shares   25,000 25,000   40,000 40,000   3,958 3,958   7,500 7,500