Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Accumulated Deficit
Balance (in shares) at Jun. 30, 2018		59,998,811
Balance at Jun. 30, 2018	$ 142,688	$ 375,436	$ (232,748)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation (in shares)		13,344
Stock based compensation	370	$ 370
Net loss	(5,288)		(5,288)
Balance (in shares) at Sep. 30, 2018		60,012,155
Balance at Sep. 30, 2018	137,970	$ 375,806	(237,836)
Balance (in shares) at Jun. 30, 2018		59,998,811
Balance at Jun. 30, 2018	142,688	$ 375,436	(232,748)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(15,726)
Balance (in shares) at Dec. 31, 2018		60,013,718
Balance at Dec. 31, 2018	128,089	$ 376,363	(248,274)
Balance (in shares) at Sep. 30, 2018		60,012,155
Balance at Sep. 30, 2018	137,970	$ 375,806	(237,836)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation (in shares)		1,563
Stock based compensation	557	$ 557
Net loss	(10,438)		(10,438)
Balance (in shares) at Dec. 31, 2018		60,013,718
Balance at Dec. 31, 2018	128,089	$ 376,363	(248,274)
Balance (in shares) at Jun. 30, 2019		60,008,481
Balance at Jun. 30, 2019	114,423	$ 376,853	(262,430)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation	290	$ 290
Net loss	(11,508)		(11,508)
Balance (in shares) at Sep. 30, 2019		60,008,481
Balance at Sep. 30, 2019	103,205	$ 377,143	(273,938)
Balance (in shares) at Jun. 30, 2019		60,008,481
Balance at Jun. 30, 2019	114,423	$ 376,853	(262,430)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(19,886)
Balance (in shares) at Dec. 31, 2019		64,171,422
Balance at Dec. 31, 2019	113,346	$ 395,662	(282,316)
Balance (in shares) at Sep. 30, 2019		60,008,481
Balance at Sep. 30, 2019	103,205	$ 377,143	(273,938)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock based compensation (in shares)		362,941
Stock based compensation	1,742	$ 1,742
Net loss	(8,378)		(8,378)
Issuance of common stock in relation to private placement (in shares)		3,800,000
Issuance of common stock in relation to private placement, net of offering costs incurred of $1,102	16,777	$ 16,777
Balance (in shares) at Dec. 31, 2019		64,171,422
Balance at Dec. 31, 2019	$ 113,346	$ 395,662	$ (282,316)