Annual report pursuant to Section 13 and 15(d)

Discontinued Operations (Schedule of Cash Flows Statement) (Details)

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Discontinued Operations (Schedule of Cash Flows Statement) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Investing activities    
Proceeds from sale of National   $ 13,089
Total cash provided by discontinued investing activities $ 0 $ 13,089