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Debt - Narrative (Details) (USD $)
1 Months Ended 6 Months Ended 1 Months Ended
Jun. 30, 2013
Sep. 30, 2013
Jun. 11, 2013
Mar. 31, 2013
Sep. 30, 2013
Revolving Credit Facility [Member]
Sep. 30, 2013
Term Loan [Member]
Jul. 12, 2013
Subsequent Event [Member]
Revolving Credit Facility [Member]
Jul. 12, 2013
Subsequent Event [Member]
Revolving Credit Facility, Denominated in US Dollars [Member]
Jul. 12, 2013
Subsequent Event [Member]
Revolving Credit Facility, Denominated in US Dollars and Euros [Member]
Jul. 12, 2013
Subsequent Event [Member]
Bridge Loan [Member]
Jun. 30, 2013
Maximum [Member]
Jun. 30, 2013
London Interbank Offered Rate (LIBOR) [Member]
Revolving Credit Facility [Member]
Debt Disclosure [Abstract]                        
Short-term borrowings   $ 6,608,000   $ 22,017,000                
Renewable period of borrowing facilities   1 year                    
Interest rate description on borrowings   interest at current local market rates plus up to one percent per annum                    
Weighted average interest rate on short-term borrowings   5.50%                    
Total debt   311,500,000   776,000,000                
Line of Credit Facility [Line Items]                        
DIP, amount arranged   $ 500,000,000 $ 500,000,000   $ 225,000,000 $ 275,000,000 $ 225,000,000 $ 110,000,000 $ 115,000,000 $ 25,000,000    
DIP amount arranged, maturity period                     16 months  
DIP amount arranged, basis spread                       3.25%
DIP amount arranged, stated percentage           9.00%            
Percentage pledge of equity interests 100.00%                      
Trailing EBITDA 12 months