Three Months Ended

March 31

June 30

September 30

December 31

2019

Total revenues

$

4,541

$

6,350

$

6,303

$

7,384

Gross profit

$

566

$

921

$

1,191

$

1,391

Net (loss) income attributable to common

   stockholders

$

(702

)

$

(408

)

$

143

$

105

Net (loss) income per share of common stock

   attributable to common stockholders, basic

$

(4.10

)

$

(2.31

)

$

0.80

$

0.58

Net (loss) income per share of common stock

   attributable to common stockholders, diluted

$

(4.10

)

$

(2.31

)

$

0.78

$

0.56

2018

Total revenues

$

3,409

$

4,002

$

6,824

$

7,226

Gross profit

$

456

$

619

$

1,524

$

1,443

Net (loss) income attributable to common

   stockholders

$

(709

)

$

(718

)

$

311

$

140

Net (loss) income per share of common stock

   attributable to common stockholders, basic

$

(4.19

)

$

(4.22

)

$

1.82

$

0.81

Net (loss) income per share of common stock

   attributable to common stockholders, diluted

$

(4.19

)

$

(4.22

)

$

1.75

$

0.78