Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Mar. 31, 2021	Jun. 30, 2022	Jun. 30, 2021
Cash flows from operating activities:
Net income (loss)	$ (983)	$ (1,057)	$ (1,234)	$ (1,635)	$ (2,040)	$ (2,869)
Changes in operating assets and liabilities:
Other assets					80	65
Accounts payable and accrued liabilities					477	72
Net cash provided (used) by operating activities					(1,483)	(2,732)
Net change in cash and cash equivalents					(1,483)	(2,732)
Cash and cash equivalents at beginning of period		$ 3,003		$ 7,925	3,003	7,925
Cash and cash equivalents at end of period	$ 1,520		$ 5,193		1,520	5,193
Supplemental cash flow disclosure:
Income taxes refunded (paid)					$ 0	$ 0