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, 2017	Mar. 31, 2016
Earnings Per Share [Abstract]
Net income	$ 6,762	$ 1,940
Weighted-average shares outstanding - basic (in shares)	75,059,838	71,883,745
Dilutive securities (in shares)	882,770	269,191
Weighted-average shares outstanding - diluted (in shares)	75,942,608	72,152,936
Common stock equivalent shares excluded due to antidilutive effect (in shares)	0	3,361,524
Basic and diluted:
Net income per common share (in dollars per share)	$ 0.09	$ 0.03
Net income per common share (diluted) (in dollars per share)	$ 0.09	$ 0.03