Condensed Consolidated Statement of Shareholders’ Equity - USD ($) $ in Thousands	Total	Common Shares	Treasury Shares	Additional Paid-In Capital	Accumulated Deficit	AOCI Attributable to Parent	IPO	IPO Common Shares
Beginning balance (in shares) at Dec. 31, 2018		20,672,025	408,070
Beginning balance at Dec. 31, 2018	$ 69,485	$ 145,709	$ (2,854)	$ 15,156	$ (88,975)	$ 449
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of shares in an asset acquisition (in shares)		12,404
Issuance of shares in an asset acquisition	337	$ 337
Stock option exercises (in shares)		5,941
Stock option exercises	84	$ 84
Warrant exercises (in shares)		70,567
Warrant exercises	56	$ 113		(57)
Share-based compensation (in shares)		45,394
Share-based compensation	1,836	$ 45		1,791
Shares withheld to cover income tax obligation upon vesting of restricted stock (in shares)		(2,528)
Shares withheld to cover income tax obligation upon vesting of restricted stock	(56)	$ (3)		(53)
Foreign currency translation gain	67					67
Net loss	(10,779)				(10,779)
Ending balance (in shares) at Mar. 31, 2019		20,803,803	408,070
Ending balance at Mar. 31, 2019	61,030	$ 146,285	$ (2,854)	16,837	(99,754)	516
Beginning balance (in shares) at Dec. 31, 2019		21,057,040	408,070
Beginning balance at Dec. 31, 2019	$ 39,614	$ 147,688	$ (2,854)	21,214	(127,125)	691
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net of underwriters' discount and issuance costs (in shares)								2,628,571
Issuance of common stock, net of underwriters’ discount and issuance costs							$ 63,855	$ 63,855
Stock option exercises (in shares)	39,723	39,723
Stock option exercises	$ 181	$ 181
Share-based compensation (in shares)		11,062
Share-based compensation	1,629	$ 11		1,618
Shares withheld to cover income tax obligation upon vesting of restricted stock (in shares)		(1,383)
Shares withheld to cover income tax obligation upon vesting of restricted stock	(34)	$ (1)		(33)
Foreign currency translation gain	2,821					2,821
Net loss	(17,759)				(17,759)
Ending balance (in shares) at Mar. 31, 2020		23,735,013	408,070
Ending balance at Mar. 31, 2020	$ 90,307	$ 211,734	$ (2,854)	$ 22,799	$ (144,884)	$ 3,512