Company Overview and Equity Transactions (Details)					12 Months Ended		25 Months Ended
	Sep. 07, 2022 USD ($)	Jun. 06, 2022 USD ($) shares	Mar. 26, 2021 USD ($)	Sep. 11, 2019 USD ($) $ / shares	Dec. 31, 2022 USD ($) licensedCommercializedProduct $ / shares shares	Dec. 31, 2021 USD ($) $ / shares shares	Dec. 31, 2022 USD ($) licensedCommercializedProduct $ / shares shares	Apr. 12, 2022 USD ($)
Class of Stock [Line Items]
Number of licensed commercialized products | licensedCommercializedProduct					5		5
Common stock, par or stated value per share (in dollars per share) | $ / shares					$ 0.001	$ 0.001	$ 0.001
Cost of common stock issued under equity offering					$ (289,000)	$ (1,291,000)
Ownership limitation, maximum percent of beneficial ownership								9.99%
Common stock, shares outstanding (in shares) | shares					54,827,734	41,228,736	54,827,734
Common Stock
Class of Stock [Line Items]
Common stock issued under equity offering (in shares) | shares					2,860,538	6,550,486
Equity Distribution Agreement
Class of Stock [Line Items]
Sale of stock, aggregate offering price				$ 25,000,000
Common stock, par or stated value per share (in dollars per share) | $ / shares				$ 0.001
Equity Distribution Agreement | Maximum
Class of Stock [Line Items]
Sale of stock, aggregate offering price	$ 35,000
At The Market Offering, Amendment One | Maximum
Class of Stock [Line Items]
Sale of stock, aggregate offering price			$ 50,000,000
At The Market Offering
Class of Stock [Line Items]
Consideration received on sale of stock					$ 3,907,000	$ 29,778,000	$ 39,740,000
Remaining amount available for offering					33,416,000
Number of shares issued in transaction (in shares) | shares							10,341,957
Lincoln Park Agreement
Class of Stock [Line Items]
Consideration received on sale of stock					$ 1,987,000
Right to sell common stock, value								$ 40,000
Agreement term (in months)								36 months
Number of shares issued in transaction (in shares) | shares					1,600,000
Commitment shares issued (in shares) | shares					236,491
Securities Purchase Agreement
Class of Stock [Line Items]
Common stock, shares outstanding (in shares) | shares		4,850,000
Common stock entitled to purchasers by pre-funded warrants (in shares) | shares		4,000,000
Stock to be purchased by common stock warrants (in shares) | shares		8,850,000
Net proceeds after placement agent fees, expenses, and offering expenses payable		$ 7,796,000