Other Assets - Investments - Equity Securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Equity Securities
Investments - equity securities	$ 474		$ 450
Unrealized gain (loss) on investments held as of balance sheet date		$ (1,000)
Maximum
Equity Securities
Unrealized gain (loss) on investments held as of balance sheet date	100
Preferred stock
Equity Securities
Investments - equity securities	$ 500		$ 500