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Accrued Core Payment (Tables)
 12 Months Ended
Mar. 31, 2018
Accrued Core Payment [Abstract]  
Schedule of future repayments of accrued core payments
Future repayments for accrued core payment are as follows:

Year Ending March 31,
    
2019
 
$
17,421,000
 
2020
  
7,865,000
 
2021
  
6,651,000
 
2022
  
4,841,000
 
Total accrued core payment
  
36,778,000
 
Less amount representing interest
  
(1,769,000
)
Present value of accrued core payment
  
35,009,000
 
Less current portion of accrued core payment
  
(16,536,000
)
Long-term portion of  accrued core payment
 
$
18,473,000