Three months ended June 30,

Six months ended June 30,

2021

2020

2021

2020

Numerator:

Net loss

$

(1,586

)

$

(1,937

)

$

(3,241

)

$

(3,784

)

Denominator:

Basic weighted average shares outstanding

18,775,817

16,650,774

18,775,795

16,650,750

Dilutive common stock equivalents using treasury stock method

—

Diluted weighted average shares outstanding

18,775,817

16,650,774

18,775,795

16,650,750

Basic loss per common share

$

(0.08

)

$

(0.12

)

$

(0.17

)

$

(0.23

)

Diluted loss per common share

$

(0.08

)

$

(0.12

)

$

(0.17

)

$

(0.23

)

Weighted average options, warrants and convertible portion of senior convertible notes outstanding

3,597,418

542,196

3,616,661

542,507

Anti-dilutive options, warrants and convertible portion of senior convertible notes not included in the computation

3,597,148

542,196

3,616,661

542,507