Stockholders' Equity (Stock Option Activity) (Details) $ / shares in Units, shares in Thousands, $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($) $ / shares shares
Shares
Beginning balance (shares) | shares	308
Exercised (shares) | shares	(38)
Expired (USD per share) | shares	(2)
Ending balance (shares) | shares	268
Exercisable (shares) | shares	268
Weighted Average Exercise Price
Beginning balance (USD per share)	$ 6.86
Exercised (USD per share)	7.77
Expired (USD per share)	7.63
Ending balance (USD per share)	6.73
Exercisable (USD per share)	$ 6.73
Weighted average remaining contractual term, outstanding	3 years 5 months 10 days
Weighted average remaining contractual term, exercisable	3 years 5 months 10 days
Aggregate intrinsic value, outstanding | $	$ 2,828
Aggregate intrinsic value, exercisable | $	$ 2,828