For the year ended December 31,

2020

2019

2018

(in thousands, except per share amounts)

Net income (loss)

$

(8,391)

$

(78,733)

$

(407,088)

Net income (loss) per common share:

Basic

$

(0.17)

$

(1.66)

$

(8.63)

Diluted

$

(0.17)

$

(1.66)

$

(8.63)

Basic weighted average shares outstanding

48,362

47,482

47,151

Effect of potentially dilutive share-based awards

—

Diluted weighted average shares outstanding

48,362

47,482

47,151

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

947

531

28

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

923

1,689

2,474

Maximum potential shares to be issued for settlement of the 2023, 2025, and 2027 Notes excluded from the diluted calculation as their effect would be antidilutive

17,753

8,618