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Schedule II Valuation and Qualifying Accounts Schedule II Valuation and Qualifying Accounts | 12 Months Ended
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Dec. 31, 2020
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
Schedule of Valuation and Qualifying Accounts [Table Text Block] |
Column A |  | Column B |  | Column C |  | Column D |  | Column 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 |

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- Definition The tabular disclosure for any allowance and reserve accounts (their beginning and ending balances, as well as a reconciliation by type of activity during the period). + References No definition available. + Details
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- References No definition available. + Details
Name: | srt_ValuationAndQualifyingAccountsAbstract
Namespace Prefix: | srt_
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Balance Type: | na
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