Deferred Payment Obligation (Details) - USD ($) $ in Thousands				12 Months Ended
	Dec. 18, 2019	Dec. 11, 2009	Jul. 31, 2008	Mar. 31, 2020	Mar. 31, 2019	Mar. 31, 2018
Other Liabilities Disclosure [Abstract]
Deferred payment obligation, original amount			$ 158,000
Deferred payment obligation, term			8 years 6 months
Deferred payment obligation, payment pursuant of the merger agreement		$ 78,000	$ 78,000
Deferred payment obligation, payment	$ 83,000	100,400		$ 80,000	$ 0	$ 0
Deferred payment obligation, accrued interest payment	3,000	$ 22,400		5,740	$ 7,993	$ 7,993
Deferred payment obligation				$ 80,000
Required payment on DPO	$ 80,000