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Borrowings (Details Textual) - USD ($)
$ in Thousands
6 Months Ended
Apr. 15, 2020
Jun. 30, 2020
Borrowings (Textual)    
Interest rate on borrowings 1.00%  
Principal amount   $ 645,700
Mature date Apr. 15, 2022  
Finance Lease Obligations [Member]    
Borrowings (Textual)    
Description of borrowings expiration period   Various dates through April 2022
Finance Lease Obligations [Member] | Minimum [Member]    
Borrowings (Textual)    
Interest rate on borrowings   11.40%
Finance Lease Obligations [Member] | Maximum [Member]    
Borrowings (Textual)    
Interest rate on borrowings   18.30%
Other Promissory Notes [Member]    
Borrowings (Textual)    
Description of borrowings expiration period   Various dates through June 2022
Other Promissory Notes [Member] | Minimum [Member]    
Borrowings (Textual)    
Interest rate on borrowings   13.10%
Other Promissory Notes [Member] | Maximum [Member]    
Borrowings (Textual)    
Interest rate on borrowings   13.30%