Six Months Ended
June 30,

Three Months Ended
June 30,

2020

2019

2020

2019

Weighted-average common shares outstanding – basic

23,987,715

23,830,367

23,945,916

23,917,563

Dilutive effect of options, warrants and restricted stock units

—

—

—

—

Weighted-average common shares outstanding – diluted

23,987,715

23,830,367

23,945,916

23,917,563

Options and restricted stock units excluded from the computation of diluted loss per share because the effect of inclusion would have been anti-dilutive

862,500

1,132,500

862,500

1,132,500