Investment Securities Table (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
Jun. 30, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, within One Year, Fair Value	$ 14,661	$ 14,687
Debt Securities, Available-for-sale, Amortized Cost	30,331	27,661
Debt Securities, Available-for-sale, Amortized Cost, Current	14,661	14,687
Debt Securities, Available-for-sale	30,331	27,661
Available-for-sale Debt Security Current [Member]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Unrealized Loss	0	0
Long-term Investments [Domain]
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Noncurrent	15,670	12,974
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities, Available-for-sale, Noncurrent	$ 15,670	$ 12,974

Amortized cost of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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