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Income Taxes - NOLs and carryforwards (Detail)
$ in Millions
Dec. 31, 2021
USD ($)
Research Tax Credit Carryforward [Member]  
Tax Credit Carryforward  
Tax credits available to carry forward $ 10.3
General Business Tax Credit Carryforward  
Tax Credit Carryforward  
Tax credits available to carry forward 37.7
U.S. Federal And State  
Tax Credit Carryforward  
Net operating losses $ 290.0