Shareholders' Equity, Stock Plans and Preferred Stock - Schedule of Stock Options Outstanding and Exercisable (Details) - Stock Options and Stock Appreciation Rights (SARs) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Exercise Prices (in dollars per share)	$ 7.29	$ 6.64
Grants Outstanding (in shares)	122
Grants Exercisable (in shares)	122
$8.14 to $10.21
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
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
Weighted Average Exercise Prices (in dollars per share)	$ 9.32
Grants Outstanding (in shares)	60
Intrinsic Value - Grants Outstanding	$ 0
Grants Exercisable (in shares)	60
Intrinsic Value - Grants Exercisable	$ 0
$2.37 to $5.86
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, lower range limit (in dollars per share)	$ 2.37
Range of Exercise Prices, upper range limit (in dollars per share)	5.86
Weighted Average Exercise Prices (in dollars per share)	$ 5.32
Grants Outstanding (in shares)	62
Intrinsic Value - Grants Outstanding	$ 0
Grants Exercisable (in shares)	62
Intrinsic Value - Grants Exercisable	$ 0