Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Mar. 31, 2018

Quarterly Financial Data [Abstract]

Schedule of Quarterly Financial Data

(In thousands, except per share amount)	For the year ended March 31, 2018:
Three Months Ended	June 30,			September 30,			December 31,			March 31,
	2017			2017			2017			2018
Total revenue	$	8,923		$	11,049		$	14,933		$	13,498
Operating loss	(14,693		)	(7,805		)	(3,851		)	(5,808		)
Net loss	(15,252		)	(7,281		)	(4,248		)	(5,995		)
Net loss per common share—basic	(0.91		)	(0.38		)	(0.21		)	(0.30		)
Net loss per common share—diluted	(0.91		)	(0.38		)	(0.21		)	(0.30		)
	For the year ended March 31, 2017:
Three Months Ended	June 30,			September 30,			December 31,			March 31,
	2016			2016			2016			2017
Total revenue	$	13,345		$	18,507		$	27,148		$	16,195
Operating loss	(9,344		)	(7,150		)	(4,060		)	(6,988		)
Net loss	(10,355		)	(7,325		)	(2,768		)	(6,925		)
Net loss per common share—basic	(0.76		)	(0.53		)	(0.20		)	(0.50		)
Net loss per common share—diluted	(0.76		)	(0.53		)	(0.20		)	(0.50		)