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Borrowings (Narrative) (Details) (USD $)
1 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 9 Months Ended 9 Months Ended
Nov. 30, 2011
Sep. 30, 2014
Sep. 30, 2014
Senior Convertible Notes Due December 15, 2016 [Member]
Sep. 30, 2013
Senior Convertible Notes Due December 15, 2016 [Member]
Sep. 30, 2014
Senior Convertible Notes Due December 15, 2016 [Member]
Sep. 30, 2013
Senior Convertible Notes Due December 15, 2016 [Member]
Nov. 30, 2011
Senior Convertible Notes Due December 15, 2016 [Member]
Sep. 30, 2014
LayerWise NV [Member]
Revolving Credit Facility [Member]
Sep. 03, 2014
LayerWise NV [Member]
Revolving Credit Facility [Member]
Sep. 30, 2014
LayerWise NV [Member]
Term Loan [Member]
Sep. 03, 2014
LayerWise NV [Member]
Term Loan [Member]
Debt Instrument [Line Items]                      
Principal amount of convertible notes $ 152,000,000                    
Interest rate             5.50%        
Remaining amount of outstanding notes converted     12,540,000                
Assumed debt                 1,427,000   240,000
Loss on conversion of debt     1,806,000 2,022,000 1,806,000 11,275,000          
Effective interest rate, minimum                   1.34%  
Effective interest rate, maximum                   5.40%  
Balance on loan     0   0         223,000  
Balance on credit facility               0      
Commitment fee on unused portion of facility               0.125%      
Notes issued with an effective yield 5.96%                    
Original issue discount   98.00%                  
Convertible notes capitalized costs 6,634,000                    
Proceeds from issuance of notes $ 145,366,000