SUMMARY OF CRITICAL ACCOUNTING POLICIES AND ESTIMATES - Narrative (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Short Term Equipment Lease Deposit
New Accounting Pronouncements or Change in Accounting Principle
Restricted cash and cash equivalents	$ 2.0	$ 4.8
Short Term Equipment Lease Deposit | Heartland Business
New Accounting Pronouncements or Change in Accounting Principle
Restricted cash and cash equivalents	1.5
Money Market Funds
New Accounting Pronouncements or Change in Accounting Principle
Restricted cash and cash equivalents	$ 0.1	$ 0.1