Stock-Based Compensation (Schedule of Stock Options Outstanding and Exercisable) (Details) - Stock Options and Stock Appreciation Rights (SARs) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted Average Exercise Prices	$ 6.97	$ 6.97
Grants Outstanding	232
Grants Exercisable	222
$10.21 to $11.59
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Maximum	$ 10.21
Range of Exercise Prices, Maximum	11.59
Weighted Average Exercise Prices	$ 10.88
Grants Outstanding	62
Intrinsic Value-Grants Outstanding	$ 0
Grants Exercisable	52
Intrinsic Value- Grants Exercisable	$ 0
$2.37 to $6.21
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of Exercise Prices, Maximum	$ 2.37
Range of Exercise Prices, Maximum	6.21
Weighted Average Exercise Prices	$ 5.54
Grants Outstanding	170
Intrinsic Value-Grants Outstanding	$ 444
Grants Exercisable	170
Intrinsic Value- Grants Exercisable	$ 444