NET INCOME (LOSS) PER SHARE (Tables)

12 Months Ended

Dec. 31, 2016

NET INCOME (LOSS) PER SHARE

Schedule of calculation of basic and diluted earnings per common share

(in thousands, except for per share amounts)	2016		2015		2014
Basic net income (loss) per share
Net income (loss)	$	(88,720)	$	(75,738)	$	131,762
Denominator		61,297		60,117		58,293
Basic net income (loss) per share	$	(1.45)	$	(1.26)	$	2.26
Diluted net income (loss) per share
Numerator:
Net income (loss)	$	(88,720)	$	(75,738)	$	131,762
Add interest expense on convertible debt, net of tax		—		—		4,256
	$	(88,720)	$	(75,738)	$	136,018
Denominator:
Denominator for basic net income (loss) per share		61,297		60,117		58,293
Add effect of dilutive securities:
Stock options and equivalents		—		—		2,463
Convertible debt		—		—		5,551
Denominator for diluted net income (loss) per share:		61,297		60,117		66,307
Diluted net income (loss) per share:	$	(1.45)	$	(1.26)	$	2.05

Schedule of antidilutive securities excluded from computation of diluted net income per share

(in thousands)	2016	2015	2014
Convertible debt	17,931	17,931	—
Stock options and equivalents	3,371	1,490	1,578
Total potentially dilutive common shares	21,302	19,421	1,578	—