Significant Accounting Policies - Impact of the Adoption of ASU 2020-06 (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Convertible notes	$ 4,138	$ 3,709
Deferred income tax liability	0	79
Total liabilities	17,422	14,034
Additional paid-in capital	62,842	63,104
Accumulated deficit	(60,526)	(57,863)
Total shareholders' equity	614	3,871
Total liabilities and shareholders' equity	$ 18,036	17,905
Previously Reported [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Convertible notes		3,709
Deferred income tax liability		79
Total liabilities		14,034
Additional paid-in capital		63,104
Accumulated deficit		(57,863)
Total shareholders' equity		3,871
Total liabilities and shareholders' equity		17,905
Restatement Adjustment [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Convertible notes		4,097
Deferred income tax liability		0
Total liabilities		14,343
Additional paid-in capital		62,779
Accumulated deficit		(57,840)
Total shareholders' equity		3,562
Total liabilities and shareholders' equity		17,905
Accounting Standards Update 2020-06 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Convertible notes		388
Deferred income tax liability		(79)
Total liabilities		309
Additional paid-in capital		(325)
Accumulated deficit		23
Total shareholders' equity		(309)
Total liabilities and shareholders' equity		$ 0