| Summary of Quarterly Results of Operations |
The following is a summary of the quarterly results of operations for the years ended December 31, 2019 and 2018 (in thousands except per share data):
|
|
|
For the three months ended
|
|
|
2019
|
|
December 31
|
|
|
September 30
|
|
|
June 30
|
|
|
March 31
|
|
|
Sales
|
|
$
|
13,028
|
|
|
$
|
13,142
|
|
|
$
|
14,462
|
|
|
$
|
15,107
|
|
|
Gross profit
|
|
|
5,779
|
|
|
|
6,075
|
|
|
|
6,685
|
|
|
|
6,785
|
|
|
Total operating expenses
|
|
|
5,868
|
|
|
|
6,280
|
|
|
|
6,189
|
|
|
|
6,607
|
|
|
Net income (loss)
|
|
|
63
|
|
|
|
(135
|
)
|
|
|
662
|
|
|
|
336
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Basic net income (loss) per share
|
|
|
0.01
|
|
|
|
(0.01
|
)
|
|
|
0.07
|
|
|
|
0.03
|
|
|
Diluted net income (loss) per share
|
|
|
0.01
|
|
|
|
(0.01
|
)
|
|
|
0.07
|
|
|
|
0.03
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2018
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Sales
|
|
$
|
16,562
|
|
|
$
|
15,787
|
|
|
$
|
14,972
|
|
|
$
|
13,305
|
|
|
Gross profit
|
|
|
6,850
|
|
|
|
6,865
|
|
|
|
6,602
|
|
|
|
6,194
|
|
|
Total operating expenses
|
|
|
5,730
|
|
|
|
6,558
|
|
|
|
10,251
|
|
|
|
7,358
|
|
|
Net income (loss)
|
|
|
1,275
|
|
|
|
437
|
|
|
|
(3,190
|
)
|
|
|
(1,106
|
)
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Basic net loss per share
|
|
|
0.13
|
|
|
|
0.05
|
|
|
|
(0.34
|
)
|
|
|
(0.12
|
)
|
|
Diluted net loss per share
|
|
|
0.13
|
|
|
|
0.04
|
|
|
|
(0.34
|
)
|
|
|
(0.12
|
)
|
|