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Quarterly Financial Information (unaudited) (Tables)
 12 Months Ended
Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]  
Summary of Quarterly Results of Operations

The following is a summary of the quarterly results of operations for the years ended December 31, 2018 and 2017:

 

 

 

For the Three Months Ended

 

 

 

December 31, 2018

 

 

September 30, 2018

 

 

June 30, 2018

 

 

March 31, 2018

 

Sales

 

$

16,561,520

 

 

$

15,786,913

 

 

$

14,971,681

 

 

$

13,305,098

 

Gross Profit

 

 

6,850,134

 

 

 

6,865,342

 

 

 

6,601,521

 

 

 

6,194,171

 

Total operating expenses

 

 

5,730,406

 

 

 

6,558,122

 

 

 

10,250,807

 

 

 

7,357,840

 

Net income (loss)

 

 

1,274,559

 

 

 

437,259

 

 

 

(3,190,347

)

 

 

(1,105,791

)

Basic net income (loss) per share

 

$

0.13

 

 

$

0.05

 

 

$

(0.34

)

 

$

(0.12

)

Diluted net income (loss) per share

 

$

0.13

 

 

$

0.04

 

 

$

(0.34

)

 

$

(0.12

)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

For the Three Months Ended

 

 

 

December 31, 2017

 

 

September 30, 2017

 

 

June 30,     2017

 

 

March 31, 2017

 

Sales

 

$

12,807,175

 

 

$

12,448,436

 

 

$

13,013,143

 

 

$

11,252,417

 

Gross Profit

 

 

5,888,332

 

 

 

6,003,892

 

 

 

6,121,524

 

 

 

5,288,458

 

Total operating expenses

 

 

5,418,089

 

 

 

5,803,260

 

 

 

6,248,678

 

 

 

4,862,979

 

Net income (loss)

 

 

591,933

 

 

 

234,353

 

 

 

(70,121

)

 

 

385,090

 

Basic net loss per share

 

$

0.06

 

 

$

0.02

 

 

$

(0.01

)

 

$

0.04

 

Diluted net loss per share

 

$

0.06

 

 

$

0.02

 

 

$

(0.01

)

 

$

0.04