Shareholders' Equity, Stock Plans and Preferred Stock - Schedule of Stock Options Outstanding and Exercisable (Details) - SOSAR - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Exercise Prices (in dollars per share)	$ 7.92	$ 7.55
Grants Outstanding (in shares)	65
Grants Exercisable (in shares)	65
$8.14 to $10.21
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Exercise Prices (in dollars per share)	$ 8.83
Grants Outstanding (in shares)	45
Intrinsic Value - Grants Outstanding	$ 0
Grants Exercisable (in shares)	45
Intrinsic Value - Grants Exercisable	$ 0
Range of Exercise Prices, lower range limit (in dollars per share)	$ 8.14
Range of Exercise Prices, upper range limit (in dollars per share)	10.21
5.86
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Exercise Prices (in dollars per share)	$ 5.86
Grants Outstanding (in shares)	20
Intrinsic Value - Grants Outstanding	$ 0
Grants Exercisable (in shares)	20
Intrinsic Value - Grants Exercisable	$ 0
Range of Exercise Prices, lower range limit (in dollars per share)	$ 5.86
Range of Exercise Prices, upper range limit (in dollars per share)	$ 5.86