Earnings per Share (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Earnings per Share [Line Items]
Total anti-dilutive shares excluded from the calculation (in shares)	107,769	1,000	67,846	80,726
Number of dilutive potential shares included in computation of diluted net income (loss) per share	0		0
Common Stock [Member]
Earnings per Share [Line Items]
Common stock repurchased and retired, shares	169,625
Common stock repurchased and retired, average price per share	$ 35.08
Common stock repurchased and retired, value	$ 6.0