Note 5 - Net Income per Common Share (Tables)

6 Months Ended

Jun. 30, 2014

Earnings Per Share [Abstract]

Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]

	Three Months Ended June 30,				Six Months Ended June 30,
(in thousands, except share and per share amounts)	2014		2013		2014		2013
Net income	$	10,956	$	8,611	$	21,058	$	16,898
Basic - weighted-average shares outstanding:		25,620,005		25,258,932		25,597,055		25,030,283
Effect of dilutive securities:
Employee stock options and other		526,843		591,315		535,210		597,099
Diluted - weighted-average shares outstanding:		26,146,848		25,850,247		26,132,265		25,627,382
Net income per share:
Basic	$	0.43	$	0.34	$	0.82	$	0.68
Diluted	$	0.42	$	0.33	$	0.81	$	0.66