Three months ended June 30,

Six months ended June 30,

2020

2019

2020

2019

(in thousands, except per share amounts)

Net income (loss)

$

(8,302)

$

(15,565)

$

(8,869)

$

(34,095)

Net income (loss) per common share:

Basic

$

(0.17)

$

(0.33)

$

(0.18)

$

(0.72)

Diluted

$

(0.17)

$

(0.33)

$

(0.18)

$

(0.72)

Basic weighted average shares outstanding

48,109

47,112

48,147

47,145

Effect of potentially dilutive share-based awards

—

Diluted weighted average shares outstanding

48,109

47,112

48,147

47,145

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

712

498

671

344

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

1,194

1,903

1,132

1,933

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

15,354

8,618

15,354

8,618