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Taxes on Income (Details) - USD ($) | 3 Months Ended | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2021 | Mar. 31, 2021 | Jun. 30, 2020 | Jun. 30, 2021 | Jun. 30, 2020 | Dec. 31, 2017 | Dec. 31, 2020
Income Taxes [Abstract] |  |  |  |  |  |  |
Effective income tax rate |  |  |  | 21.00% |  | 35.00% |
Income tax receivable | $ 70,528,000 |  |  | $ 70,528,000 |  |  | $ 188,177,000
Tax refund amount |  | $ 119,493,000 |  |  |  |  |
Loss before taxes on income [Abstract] |  |  |  |  |  |  |
Earnings (loss) before taxes on income | 15,845,000 |  | $ 23,834,000 | 11,834,000 | $ (495,938,000) |  |
U.S. Federal [Abstract] |  |  |  |  |  |  |
Current | 0 |  | (18,608,000) | 0 | (156,304,000) |  |
Deferred | 3,407,000 |  | 16,149,000 | 2,804,000 | (7,294,000) |  |
U.S. State and local [Abstract] |  |  |  |  |  |  |
Current | 573,000 |  | 536,000 | 215,000 | 618,000 |  |
Deferred | 1,506,000 |  | 505,000 | 1,576,000 | (11,294,000) |  |
Foreign - current | 7,000 |  | (11,000) | 7,000 | 36,000 |  |
Total provision (benefit) for taxes on income | 5,493,000 |  | (1,429,000) | $ 4,602,000 | (174,238,000) |  |
COVID-19 [Member] |  |  |  |  |  |  |
Income Taxes [Abstract] |  |  |  |  |  |  |
Operating losses tax year |  |  |  | 2013 2014 2015 2016 2017 |  |  |
Tax benefit related to CARES Act |  |  |  |  | 50,824,000 |  |
COVID-19 [Member] | Maximum [Member] |  |  |  |  |  |  |
Income Taxes [Abstract] |  |  |  |  |  |  |
Number of years net operating losses carried |  |  |  | 5 years |  |  |
United States [Member] |  |  |  |  |  |  |
Loss before taxes on income [Abstract] |  |  |  |  |  |  |
Earnings (loss) before taxes on income | 15,811,000 |  | 23,861,000 | $ 12,192,000 | (495,628,000) |  |
Foreign [Member] |  |  |  |  |  |  |
Loss before taxes on income [Abstract] |  |  |  |  |  |  |
Earnings (loss) before taxes on income | $ 34,000 |  | $ (27,000) | $ (358,000) | $ (310,000) |  |

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