Condensed Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]
Beginning Balance at Dec. 31, 2017	$ 19,452	$ 7	$ 46,951	$ (27,506)
Beginning Balance, Shares at Dec. 31, 2017		7,110,414
Issuance of common stock at-the-market, net of issuance costs	7,491	$ 2	7,489
Issuance of common stock at-the-market, net of issuance costs, Shares		2,296,610
Stock-based compensation	161		161
Net loss and other comprehensive loss	(2,806)			(2,806)
Ending Balance at Mar. 31, 2018	24,298	$ 9	54,601	(30,312)
Ending Balance, Shares at Mar. 31, 2018		9,407,024
Beginning Balance at Dec. 31, 2018	14,492	$ 9	56,054	(41,571)
Beginning Balance, Shares at Dec. 31, 2018		9,422,143
Issuance of common stock at-the-market, net of issuance costs	107		107
Issuance of common stock at-the-market, net of issuance costs, Shares		25,218
Stock-based compensation	211		211
Net loss and other comprehensive loss	(4,881)			(4,881)
Ending Balance at Mar. 31, 2019	$ 9,929	$ 9	$ 56,372	$ (46,452)
Ending Balance, Shares at Mar. 31, 2019		9,447,361