Basic and Diluted Net Income per Share (Schedule of Earnings Per Share Reconciliation) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Earnings Per Share [Abstract]
Net income	$ 1,940	$ 5,118
Weighted-average shares outstanding - basic (in shares)	71,883,745	71,673,368
Dilutive securities (in shares)	269,191	178,113
Weighted-average shares outstanding - diluted (in shares)	72,152,936	71,851,481
Common stock equivalent shares excluded due to antidilutive effect (in shares)	3,361,524	3,368,731
Basic and diluted:
Net income per common share (in dollars per share)	$ 0.03	$ 0.07
Net income per common share (diluted) (in dollars per share)	$ 0.03	$ 0.07