XML 36 R20.htm IDEA: XBRL DOCUMENT v3.20.2
Fair Value Accounting (Tables)
9 Months Ended
Sep. 30, 2020
Fair Value Accounting  
Schedule of assets measured at fair value

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Fair value at September 30, 2020

​

​

    

Total

    

Level 1

    

Level 3

​

Other investments

​

$

295

​

$

295

​

$

—

​

​

​

​

​

​

​

​

​

​

​

​

​

​

​

Fair value at December 31, 2019

​

​

    

Total

    

Level 1

    

Level 3

​

Other investments

​

$

3,676

​

$

3,676

​

$

—

​