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Commitments and Contingencies (Details 3)
In Thousands, unless otherwise specified
1 Months Ended 0 Months Ended 1 Months Ended 3 Months Ended
Mar. 31, 2013
USD ($)
Dec. 31, 2012
USD ($)
Aug. 31, 2009
IMT LLC
ACC
USD ($)
Mar. 31, 2013
IMT LLC
ACC
USD ($)
Mar. 31, 2011
IMT LLC
ACC
As adjusted
Jan. 10, 2007
GHL
USD ($)
item
Jan. 10, 2007
GHL
EUR (€)
Mar. 31, 2013
GHL
USD ($)
item
Mar. 31, 2013
GHL
EUR (€)
Aug. 31, 2009
KCB
USD ($)
Aug. 31, 2009
KCB
EUR (€)
Mar. 31, 2013
KCB
ACC
USD ($)
Nov. 30, 2010
KCB
ACC
As adjusted
Mar. 31, 2013
KCB
IMT LLC
ACC
USD ($)
Mar. 31, 2013
KCB
IMT LLC
ACC
EUR (€)
Notes receivable                              
Number of Euro-denominated loans           3 3                
Notes receivable           $ 1,240 € 967                
Amount of notes receivable from the related party 633 663           633 472            
Number of unexercised demand notes               8 8            
Equity interest (as a percent)                   25.00% 25.00%        
Term of loans receivable                   3 years 3 years        
Loans receivable interest rate (as a percent)                   1.00% 1.00%        
Advance receivable                   1,191 930 1,165      
Debt instrument term     3 years                        
Loans payable interest rate (as a percent)     2.1505%   1.00%               1.00%    
Loan payable     1,191 1,165                      
Loan payable, amount cancelled in the event of related party default                           $ 1,200 € 910