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Fair Value Accounting (Tables)
6 Months Ended
Jun. 30, 2020
Fair Value Accounting  
Schedule of assets measured at fair value

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Fair value at June 30, 2020

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Total

    

Level 1

    

Level 3

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Other investments

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$

2,692

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$

2,692

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$

—

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Fair value at December 31, 2019

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Total

    

Level 1

    

Level 3

​

Other investments

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$

3,676

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$

3,676

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$

—

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