LEASES (Q1) (Tables)

3 Months Ended

12 Months Ended

Mar. 31, 2024

Dec. 31, 2023

LEASES [Abstract]

Operating Leases Included in Unaudited Condensed Consolidated Balance Sheets

Operating leases are included in the unaudited condensed consolidated Balance Sheets as follows:

(in thousands)			Classification			March 31, 2024			December 31, 2023
Lease assets
Operating lease cost ROU assets, net			Assets			$313.8			$353.2
Total lease assets						$313.8			$353.2

Lease liabilities
Operating lease liabilities, current			Current liabilities			$163.1			$160.3
Operating lease liabilities, non-current			Liabilities			159.8			201.6
Total lease liabilities						$322.9			$361.9

Operating leases are included in the consolidated Balance Sheets as follows:

(in thousands)			Classification			December 31, 2023			December 31, 2022
Lease assets
Operating lease cost ROU assets, net			Assets			$353.2			$507.1
Total lease assets						$353.2			$507.1
Lease liabilities
Operating lease liabilities, current			Current liabilities			$160.3			$149.4
Operating lease liabilities, non-current			Liabilities			201.6			362.1
Total lease liabilities						$361.9			$511.5

Components of Lease Costs

The components of lease costs, which are included in loss from operations in our unaudited condensed consolidated Statement of Operations we as follows:

			Three Month Period Ended
(in thousands)			March 31, 2024			March 31, 2023
Lease costs
Operating lease costs			44.8			44.8
Total lease costs			$44.8			$44.8

The components of lease costs, which are included in income/(loss) from operations in our consolidated Statement of Operations were as follows:

			Twelve Month Period Ended
(in thousands)			December 31, 2023			December 31, 2022
Lease costs
Operating lease costs			179.5			104.7
Total lease costs			$179.5			$104.7

Minimum Commitments Under the Company Leases

(in thousands)			March 31, 2024
2024 (remainder of)			$136.1
2025			185.8
2026			31.3
Total future minimum lease payments			$353.2
Amount representing interest			30.3
Present value of net future minimum lease payments			322.9

Lease commitments

(in thousands)			December 31, 2023
2024			$180.4
2025			185.8
2026			31.3
Total future minimum lease payments			397.5
Amount representing interest			35.6
Present value of net future minimum lease payments			$361.9