Share-Based Compensation (Summary Of Stock Option Activity) (Details) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) $ / shares shares
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Outstanding as of January 1, 2015 | shares	1,889
Exercised | shares	(86)
Forfeited or Expired | shares	(77)
Outstanding as of December 31, 2015 | shares	1,726
Vested at December 31, 2015 | shares	1,447
Vested or expected to vest at December 31, 2015 | shares	1,724
Weighted average exercise price outstanding as of January 1, 2015 | $ / shares	$ 6.31
Weighted average exercise price, exercised | $ / shares	5.35
Weighted average exercise price, forfeited or expired | $ / shares	7.14
Weighted average exercise price outstanding as of December 31, 2015 | $ / shares	6.32
Weighted average exercise price, vested at December 31, 2015 | $ / shares	6.07
Weighted average exercise price, vested and expected to vest at December 31, 2015 | $ / shares	$ 6.32
Weighted average remaining contractual term, vested as of December 31, 2015	5 years 3 months 18 days
Weighted average remaining contractual term, vested and expected to vest as of December 31, 2015	5 years 9 months 18 days
Aggregate intrinsic value, vested at December 31, 2015 | $	$ 17
Aggregate intrinsic value, vested and expected to vest at December 31, 2015 | $	$ 17