XML 89 R71.htm IDEA: XBRL DOCUMENT v3.24.1
Income and Other Taxes - Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Operating Loss Carryforwards [Line Items]      
Capital base tax expense $ 400,000    
Income tax expense 0 $ 0 $ 37,000
Uncertain tax positions 0    
Deferred tax asset, valuation allowance (as a percent)   100.00%  
Domestic Tax Authority      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforward 186,500,000 $ 161,700,000  
State and Local Jurisdiction      
Operating Loss Carryforwards [Line Items]      
Operating loss carryforward $ 176,000,000 $ 151,200,000