SUBSEQUENT EVENTS - January 2024 Unit Offering (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions		12 Months Ended
	Jan. 23, 2024	Dec. 31, 2023
Subsequent Event [Line Items]
Net proceeds		$ 13.6
Subsequent Event | Public Offering
Subsequent Event [Line Items]
Sale of stock (in shares)	6,900,000
Public offering price ( in dollars per share)	$ 1.50
Gross proceeds	$ 10.3
Subsequent Event | Public Offering | Common Shares
Subsequent Event [Line Items]
New issues per offering unit (in shares)	1
Number of securities called by each warrants (in shares)	1
Subsequent Event | Public Offering | Common Shares | Certain Investors
Subsequent Event [Line Items]
Number of securities called by each warrants (in shares)	1
Subsequent Event | Public Offering | Shares issuable upon the exercise of the Warrant
Subsequent Event [Line Items]
New issues per offering unit (in shares)	1
Exercise price (dollars per share)	$ 1.65
Subsequent Event | Public Offering | Shares issuable upon the exercise of the Warrant | Certain Investors
Subsequent Event [Line Items]
New issues per offering unit (in shares)	1
Subsequent Event | Public Offering | Pre-funded Warrant
Subsequent Event [Line Items]
Public offering price ( in dollars per share)	$ 1.49
Exercise price (dollars per share)	$ 0.01
Subsequent Event | Public Offering | Pre-funded Warrant | Certain Investors
Subsequent Event [Line Items]
New issues per offering unit (in shares)	1
Subsequent Event | Over-Allotment Option
Subsequent Event [Line Items]
Sale of stock (in shares)	1,000,000
Subsequent Event | Over-Allotment Option | Shares issuable upon the exercise of the Warrant
Subsequent Event [Line Items]
Sale of stock (in shares)	36,003
Subsequent Event | Private Placement | Schuler Purchase Obligation | Chief Executive Officer
Subsequent Event [Line Items]
Sale of stock (in shares)	33,332
Public offering price ( in dollars per share)	$ 1.50
Subsequent Event | Private Placement | Schuler Purchase Obligation | Chief Financial Officer
Subsequent Event [Line Items]
Sale of stock (in shares)	33,332
Public offering price ( in dollars per share)	$ 1.50
Subsequent Event | Private Placement | Schuler Purchase Obligation | Jack W. Schuler Living Trust
Subsequent Event [Line Items]
Sale of stock (in shares)	1,200,000
Public offering price ( in dollars per share)	$ 1.73
Subsequent Event | Private Placement, Additional Units | Schuler Purchase Obligation | Jack W. Schuler Living Trust
Subsequent Event [Line Items]
Sale of stock (in shares)	1,600,000
Public offering price ( in dollars per share)	$ 1.73
Gross proceeds	$ 4.7