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Schedule II Valuation and Qualifying Accounts Schedule II Valuation and Qualifying Accounts
 12 Months Ended
Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
Schedule of Valuation and Qualifying Accounts [Table Text Block]
Column AColumn BColumn CColumn DColumn E
  Additions  
 (1)(2)  
 Balance at the
Beginning of
Period		Charged to
Costs and Expenses		Charged to
Other Accounts		 Balance at End
of Period
Description-Deductions-
   Note (A)Note (B) 
Deferred tax valuation allowance:     
Year ended December 31, 2020$50,853 $2,824 $3,009 $4,298 $52,388 
Year ended December 31, 2019$15,084 $36,658 $— $889 $50,853 
Year ended December 31, 2018$12,857 $— $3,023 $796 $15,084