Stockholders' Equity (Schedule of Options Outstanding and Exercisable by Exercise Price Range) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, minimum	$ 4.35
Range of Exercise Prices, maximum	$ 28.20
Options Outstanding:
Number of Shares	1,130
Weighted Average Exercise Price	$ 6.89
Weighted Average Remaining Contractual Life	5 years 4 months 28 days
Options Exercisable:
Number of Shares	185
Weighted Average Exercise Price	$ 14.82
Weighted Average Remaining Contractual Life	2 years 6 months 14 days
$4.35-13.2 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, minimum	$ 4.35
Range of Exercise Prices, maximum	$ 13.2
Options Outstanding:
Number of Shares	1,038
Weighted Average Exercise Price	$ 5.43
Weighted Average Remaining Contractual Life	5 years 7 months 20 days
Options Exercisable:
Number of Shares	93
Weighted Average Exercise Price	$ 6.24
Weighted Average Remaining Contractual Life	2 years 3 months 18 days
$21-28.2 [Member]
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]
Range of Exercise Prices, minimum	$ 21
Range of Exercise Prices, maximum	$ 28.2
Options Outstanding:
Number of Shares	92
Weighted Average Exercise Price	$ 23.52
Weighted Average Remaining Contractual Life	2 years 9 months 11 days
Options Exercisable:
Number of Shares	92
Weighted Average Exercise Price	$ 23.52
Weighted Average Remaining Contractual Life	2 years 9 months 11 days