CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS EQUITY - USD ($) $ in Thousands		Total	Common Stock Class A-1 Common Stock		Common Stock Class A-2 Common Stock	Additional Paid-In Capital		Treasury Stock		Accumulated Deficit
Beginning balance (in shares) at Dec. 31, 2018	[1]		58,491,281					1,311,880
Beginning balance at Dec. 31, 2018		$ 57,118	$ 6	[1]		$ 80,146	[1]	$ (5,832)	[1]	$ (17,202)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of warrants (in shares)	[1]		495,030					46,409
Exercise of warrants		561				334	[1]	$ 227	[1]
Employee stock option compensation		128				128	[1]
Net (loss) income		3,995								3,995
Ending balance (in shares) at Mar. 31, 2019	[1]		58,986,311					1,265,471
Ending balance at Mar. 31, 2019		61,802	$ 6	[1]		80,608	[1]	$ (5,605)	[1]	(13,207)
Beginning balance (in shares) at Dec. 31, 2018	[1]		58,491,281					1,311,880
Beginning balance at Dec. 31, 2018		57,118	$ 6	[1]		80,146	[1]	$ (5,832)	[1]	(17,202)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		8,323
Ending balance (in shares) at Jun. 30, 2019	[1]		60,150,404					980,863
Ending balance at Jun. 30, 2019		67,547	$ 6	[1]		81,941	[1]	$ (5,521)	[1]	(8,879)
Beginning balance (in shares) at Mar. 31, 2019	[1]		58,986,311					1,265,471
Beginning balance at Mar. 31, 2019		61,802	$ 6	[1]		80,608	[1]	$ (5,605)	[1]	(13,207)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of common stock options (in shares)	[1]							284,608
Exercise of common stock options		84						$ 84	[1]
Exercise of warrants (in shares)	[1]		1,164,093
Exercise of warrants		1,205				1,205	[1]
Employee stock option compensation		128				128	[1]
Net (loss) income		4,328								4,328
Ending balance (in shares) at Jun. 30, 2019	[1]		60,150,404					980,863
Ending balance at Jun. 30, 2019		67,547	$ 6	[1]		81,941	[1]	$ (5,521)	[1]	(8,879)
Beginning balance (in shares) at Dec. 31, 2019			76,637,470		4,999,999
Beginning balance at Dec. 31, 2019		85,525	$ 8		$ 1	105,986				(20,470)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of A-2 common stock to A-1 common stock (in shares)			1,596,636		1,596,636
Employee stock option compensation		1,060				1,060
Net (loss) income		(1,966)								(1,966)
Ending balance (in shares) at Mar. 31, 2020			78,234,106		3,403,363
Ending balance at Mar. 31, 2020		84,619	$ 8		$ 1	107,046				(22,436)
Beginning balance (in shares) at Dec. 31, 2019			76,637,470		4,999,999
Beginning balance at Dec. 31, 2019		85,525	$ 8		$ 1	105,986				(20,470)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		(23,240)
Ending balance (in shares) at Jun. 30, 2020			78,382,405		3,403,363
Ending balance at Jun. 30, 2020		65,031	$ 8		$ 1	108,732				(43,710)
Beginning balance (in shares) at Mar. 31, 2020			78,234,106		3,403,363
Beginning balance at Mar. 31, 2020		84,619	$ 8		$ 1	107,046				(22,436)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of common stock options (in shares)			148,299
Exercise of common stock options		359				359
Employee stock option compensation		1,327				1,327
Net (loss) income		(21,274)								(21,274)
Ending balance (in shares) at Jun. 30, 2020			78,382,405		3,403,363
Ending balance at Jun. 30, 2020		$ 65,031	$ 8		$ 1	$ 108,732				$ (43,710)

[1] Share amounts for 2019 have been retroactively restated to give effect to the reverse capitalization that is discussed in Note 1.