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]

The following table is a reconciliation of net income and the shares used in calculating basic and diluted net income per common share for the three and six months ended June 30, 2014 and 2013 (in thousands, except share and per share data):

	Three Months Ended June 30,				Six Months ended June 30,
	2014		2013		2014		2013
Numerator:
Net income	$	20,422	$	15,382	$	24,443	$	10,624
Denominator:
Weighted average common shares outstanding – Basic	46,266,142		45,859,286		46,222,146		45,841,446
Effect of dilutive shares:
Common stock equivalents arising from stock options and ESPP	249,618		498,802		262,434		503,908
Restricted stock awards and units and performance units	98,966		138,032		148,402		178,186
Weighted average common shares outstanding – Diluted	46,614,726		46,496,120		46,632,982		46,523,540
Net income per common share:
Basic	$	0.44	$	0.34	$	0.53	$	0.23
Diluted	$	0.44	$	0.33	$	0.52	$	0.23