Condensed Consolidated Statements of Stockholders' Equity - USD ($)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Deficit [Member]	Total
Balances at Dec. 31, 2018	$ 51,000	$ 145,685,000	$ (138,042,000)	$ 7,694,000
Balances (in shares) at Dec. 31, 2018	5,069,633
Issuance of common stock and conversion of deferred consideration for asset acquisition	$ 5,000	1,457,000		1,462,000
Issuance of common stock and conversion of deferred consideration for asset acquisition (in shares)	516,976
Issuance of common stock in connection with reverse merger	$ 23,000	10,687,000	2,000	10,712,000
Issuance of common stock in connection with reverse merger (in shares)	2,389,135
Sale of common stock, net of issuance costs	$ 20,000	9,955,000		9,975,000
Sale of common stock, net of issuance costs (in shares)	1,991,269
Forfeiture of restricted stock awards (in shares)	(8,467)
Stock-based compensation		725,000		725,000
Net loss			(7,938,000)	(7,938,000)
Balances at Jun. 30, 2019	$ 99,000	168,509,000	(145,978,000)	22,630,000
Balances (in shares) at Jun. 30, 2019	9,958,546
Balances at Mar. 31, 2019	$ 51,000	145,685,000	(141,781,000)	3,955,000
Balances (in shares) at Mar. 31, 2019	5,069,633
Issuance of common stock and conversion of deferred consideration for asset acquisition	$ 5,000	1,457,000		1,462,000
Issuance of common stock and conversion of deferred consideration for asset acquisition (in shares)	516,976
Issuance of common stock in connection with reverse merger	$ 23,000	10,687,000	2,000	10,712,000
Issuance of common stock in connection with reverse merger (in shares)	2,389,135
Sale of common stock, net of issuance costs	$ 20,000	9,955,000		9,975,000
Sale of common stock, net of issuance costs (in shares)	1,991,269
Forfeiture of restricted stock awards (in shares)	(8,467)
Stock-based compensation		725,000		725,000
Net loss			(4,199,000)	(4,199,000)
Balances at Jun. 30, 2019	$ 99,000	168,509,000	(145,978,000)	22,630,000
Balances (in shares) at Jun. 30, 2019	9,958,546
Balances at Dec. 31, 2019	$ 99,000	172,015,000	(157,521,000)	14,593,000
Balances (in shares) at Dec. 31, 2019	9,922,758
Return of restricted stock awards for tax withholdings		(8,000)		(8,000)
Return of restricted stock awards for tax withholdings, shares	(2,511)
Sale of common stock, net of issuance costs	$ 87,000	22,723,000		22,810,000
Sale of common stock, net of issuance costs (in shares)	8,710,800
Exercise of warrants		81,000		81,000
Exercise of warrants (in shares)	14,464
Forfeiture of restricted stock awards (in shares)	(4,010)
Stock-based compensation		1,950,000		1,950,000
Net loss			(9,788,000)	(9,788,000)
Balances at Jun. 30, 2020	$ 186,000	196,761,000	(167,309,000)	29,638,000
Balances (in shares) at Jun. 30, 2020	18,641,501
Balances at Mar. 31, 2020	$ 186,000	195,895,000	(162,599,000)	33,482,000
Balances (in shares) at Mar. 31, 2020	18,644,693
Issuance of common stock and conversion of deferred consideration for asset acquisition		(32,000)		(32,000)
Return of restricted stock awards for tax withholdings		(8,000)		(8,000)
Return of restricted stock awards for tax withholdings, shares	(2,511)
Forfeiture of restricted stock awards (in shares)	(681)
Stock-based compensation		906,000		906,000
Net loss			(4,710,000)	(4,710,000)
Balances at Jun. 30, 2020	$ 186,000	$ 196,761,000	$ (167,309,000)	$ 29,638,000
Balances (in shares) at Jun. 30, 2020	18,641,501