Year Ended
December 31,

(in thousands, except per share amounts)

2019

2018

Net income attributable to controlling interests before preferred shares

$

1,097

$

8,404

Less: beneficial conversion feature

-

1,125

Less: net income attributable to preferred shares – preferred return

300

224

Net income attributable to common stockholders, basic

797

7,055

Less: warrant derivative gain

-

225

Net income attributable to common stockholders, diluted

$

797

$

6,830

Weighted-average number of common shares outstanding, basic

7,794

7,525

Add dilutive effects of non-vested shares of restricted stock and restricted performance units

301

314

Weighted-average number of common shares outstanding, diluted

8,095

7,839

Net income per common share, basic

$

0.10

$

0.94

Net income per common share, diluted

$

0.10

$

0.87