Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

v3.23.1
Income Taxes (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Dec. 31, 2022
Feb. 17, 2022
Income Taxes (Details) [Line Items]        
Valuation allowance $ 86,120   $ 84,952  
Valuation allowance increase (decrease) $ 1,200 $ (17,100)    
Effective statutory tax rate 21.00%      
Operating loss carryforwards $ 787,000   $ 786,600  
Operating loss carryforwards, description Company's annual limitation is expected to be increased in the first five years      
Net operating losses $ 87,800     $ 121,400
Net operating losses available 3,100      
Net operating losses restricted 6,000      
Net operating losses generated 55,000      
Net operating losses solely subject to limitation 58,100      
Net operating losses subject to limitation 3,800      
Federal research and development credit carryforwards for income tax expense $ 1,200      
Current carryforwards expiration term If not used, the current carryforwards will expire beginning in 2034.      
Annual limitation amount per year       8,200
Net unrealized built-in gain $ 265,200     $ 330,700
U.S. Federal [Member]        
Income Taxes (Details) [Line Items]        
Net operating losses $ 417,300      
State [Member]        
Income Taxes (Details) [Line Items]        
Expiration term state operating loss carryforwards begin to expire in 2027.