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Quarterly Results of Operations (Unaudited)
 12 Months Ended
Dec. 31, 2016
Quarterly Financial Information Disclosure [Abstract]  
Quarterly Results of Operations (Unaudited)
Quarterly Results of Operations (Unaudited)

The following is a summary of the unaudited quarterly results of operations for the years ended December 31, 2016, 2015 and 2014.
  
 
1st Quarter
 
2nd Quarter
 
3rd Quarter
 
4th Quarter
 
Total Year
2016:
 
 
 
 
 
 
 
 
 
Product sales
$
42,530,000

 
$
36,813,000

 
$
33,816,000

 
$
33,465,000

 
$
146,624,000

Tooling sales
2,938,000

 
2,193,000

 
7,520,000

 
15,607,000

 
28,258,000

Net sales
45,468,000

 
39,006,000

 
41,336,000

 
49,072,000

 
174,882,000

Gross margin
8,863,000

 
6,323,000

 
5,581,000

 
7,157,000

 
27,924,000

Operating income
4,442,000

 
2,307,000

 
1,657,000

 
3,139,000

 
11,545,000

Net income
2,890,000

 
1,460,000

 
1,029,000

 
2,032,000

 
7,411,000

Net income per common share:
 
 
 
 
 
 
 
 
 
   Basic (1)
$
0.38

 
$
0.19

 
$
0.13

 
$
0.27

 
$
0.97

   Diluted (1)
$
0.38

 
$
0.19

 
$
0.13

 
$
0.26

 
$
0.97

 
 
 
 
 
 
 
 
 
 
2015:
 
 
 
 
 
 
 
 
 
Product sales
$
47,854,000

 
$
53,514,000

 
$
44,243,000

 
$
43,492,000

 
$
189,103,000

Tooling sales
1,745,000

 
1,342,000

 
3,806,000

 
3,072,000

 
9,965,000

Net sales
49,599,000

 
54,856,000

 
48,049,000

 
46,564,000

 
199,068,000

Gross margin
9,025,000

 
10,982,000

 
8,311,000

 
7,934,000

 
36,252,000

Operating income
4,890,000

 
6,232,000

 
3,902,000

 
3,474,000

 
18,498,000

Net income
3,196,000

 
4,039,000

 
2,484,000

 
2,331,000

 
12,050,000

Net income per common share:
 
 
 
 
 
 
 
 
 
   Basic (1)
$
0.42

 
$
0.53

 
$
0.33

 
$
0.31

 
$
1.59

   Diluted (1)
$
0.42

 
$
0.53

 
$
0.33

 
$
0.31

 
$
1.58

 
 
 
 
 
 
 
 
 
 
2014:
 
 
 
 
 
 
 
 
 
Product sales
$
40,664,000

 
$
43,317,000

 
$
43,171,000

 
$
42,592,000

 
$
169,744,000

Tooling sales
411,000

 
2,807,000

 
420,000

 
1,822,000

 
5,460,000

Net sales
41,075,000

 
46,124,000

 
43,591,000

 
44,414,000

 
175,204,000

Gross margin
6,645,000

 
7,599,000

 
8,147,000

 
7,795,000

 
30,186,000

Operating income
3,116,000

 
3,873,000

 
3,704,000

 
3,954,000

 
14,647,000

Net income
2,120,000

 
2,520,000

 
2,428,000

 
2,566,000

 
9,634,000

Net income per common share:
 
 
 
 
 
 
 
 
 
   Basic (1)
$
0.29

 
$
0.34

 
$
0.32

 
$
0.34

 
$
1.28

   Diluted (1)
$
0.28

 
$
0.33

 
$
0.32

 
$
0.34

 
$
1.28


(1) Sum of the quarters may not sum to total year due to rounding.