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 loss	$ (478)	$ (132)	$ (759)	$ (696)	$ (610)	$ (1,455)
Adjustments to reconcile net loss to net cash (used in) provided by operating activities
Gain on sale of in process research and development					(445)	(50)
Stock-based compensation expense					37	301
Changes in operating assets and liabilities:
Prepaid expenses and other assets					(154)	1,784
Accounts payable, accrued expenses and other					(121)	2
Net cash (used in) provided by operating activities					(1,293)	582
Cash flows from investing activities
Net proceeds from sale of in process research and development					445	50
Net cash provided by investing activities					445	50
Cash flows from financing activities
Proceeds from exercise of stock options						239
Net cash provided by financing activities						239
Net (decrease) increase in cash and cash equivalents					(848)	871
Cash and cash equivalents, beginning of period		$ 14,203		$ 14,038	14,203	14,038
Cash and cash equivalents, end of period	$ 13,355		$ 14,909		$ 13,355	$ 14,909