Numerator, basic:

Net income (loss)

$

(27,943

)

$

(25,651

)

$

3,255

$

(76,298

)

Denominator, basic:

Weighted average common shares outstanding

47,976

42,002

45,734

41,845

Net income (loss) per share, basic

$

(0.58

)

$

(0.61

)

$

0.07

$

(1.82

)

Numerator, diluted:

Net income (loss)

$

(27,943

)

$

(25,651

)

$

3,255

$

(76,298

)

Adjustment for change in fair value of warrant liabilities

—

(43,793

)

—

Adjusted numerator, diluted

$

(27,943

)

$

(25,651

)

$

(40,538

)

$

(76,298

)

Denominator, diluted:

Weighted average common shares outstanding

47,976

42,002

45,734

41,845

Dilutive effect of common stock warrants

—

367

—

Weighted average dilutive common shares

47,976

42,002

46,101

41,845

Net income (loss) per share, diluted

$

(0.58

)

$

(0.61

)

$

(0.88

)

$

(1.82

)

Dilutive common stock options excluded from net income (loss) per share, diluted

2,949

1,780

2,772

1,938

Dilutive Performance Awards excluded from net income (loss) per share, diluted

7