Selected Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Schedule of Quarterly Financial Information

The following table presents selected unaudited quarterly financial information for the years ended December 31, 2020 and 2019. The results for any quarter are not necessarily indicative of future quarterly results and, accordingly, period to period comparisons should not be relied upon as an indication of future performance.

	FOR THE QUARTER ENDED
(in thousands, except per share amounts)	DECEMBER 31,		SEPTEMBER 30,		JUNE 30,		MARCH 31,
2020
Total revenues, net	$	24,683	$	20,081	$	18,033	$	20,341
Total costs and expenses	$	60,276	$	53,685	$	60,586	$	64,281
Net loss	$	(46,137)	$	(39,648)	$	(48,187)	$	(49,129)
Net loss per common share—basic and diluted	$	(1.00)	$	(0.86)	$	(1.05)	$	(1.07)
	DECEMBER 31,		SEPTEMBER 30,		JUNE 30,		MARCH 31,
2019
Total revenues, net	$	24,657	$	18,544	$	15,835	$	10,852
Total costs and expenses	$	74,595	$	61,871	$	61,910	$	59,004
Net loss	$	(55,064)	$	(49,402)	$	(47,164)	$	(47,951)
Net loss per common share—basic and diluted	$	(1.21)	$	(1.09)	$	(1.04)	$	(1.06)