For the year ended December 31,

2019

2018

2017

(in thousands, except per share amounts)

Net income (loss)

$

(78,733)

$

(407,088)

$

(51,396)

Net income (loss) per common share:

Basic

$

(1.66)

$

(8.63)

$

(1.16)

Diluted

$

(1.66)

$

(8.63)

$

(1.16)

Basic weighted average shares outstanding

47,482

47,151

44,174

Effect of potentially dilutive share-based awards

—

Diluted weighted average shares outstanding

47,482

47,151

44,174

Common share equivalents excluded from the diluted weighted average shares outstanding since the Company incurred a net loss and their effect would be antidilutive

531

28

239

Potentially dilutive shares excluded from the diluted calculation as their effect would be antidilutive

1,689

2,474

1,744

Maximum potential shares to be issued for settlement of the Convertible Senior Notes excluded from the diluted calculation as their effect would be antidilutive

8,618