Stock-Based Compensation (Schedule of Awards Outstanding and Exercisable) (Details) - Stock Options and Stock Appreciation Rights (SARs) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average exercise prices (dollars per share)	$ 6.98	$ 6.97
Grants outstanding (shares)	231
Grants exercisable (shares)	222
$10.21 to $11.59
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of exercise prices, minimum (dollars per share)	$ 10.21
Range of exercise prices, maximum (dollars per share)	11.59
Weighted average exercise prices (dollars per share)	$ 10.88
Grants outstanding (shares)	61
Intrinsic value - grants outstanding	$ 0
Grants exercisable (shares)	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, minimum (dollars per share)	$ 2.37
Range of exercise prices, maximum (dollars per share)	6.21
Weighted average exercise prices (dollars per share)	$ 5.55
Grants outstanding (shares)	170
Intrinsic value - grants outstanding	$ 754
Grants exercisable (shares)	170
Intrinsic value - grants exercisable	$ 754