Net Income Per Share (Narrative) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Antidilutive securities excluded from EPS				334,000
Performance Vesting RSUs [Member]
Antidilutive securities excluded from EPS	80,000	231,000	80,000	231,000