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SUPPLEMENTAL UNAUDITED QUARTERLY FINANCIAL INFORMATION (Tables)
 12 Months Ended
Dec. 31, 2017
Selected Quarterly Financial Information [Abstract]  
Schedule of quarterly information
The results of operations for any quarter are not necessarily indicative of the results of operations for any future period.
(In thousands, except per share data)
First
Quarter
 
Second
Quarter
 
Third
Quarter
 
Fourth
Quarter
Year ended December 31, 2017
 
 
 
 
 
 
 
Sales
$
8,389

 
$
9,799

 
$
9,347

 
$
11,348

Gross profit
4,226

 
5,042

 
4,594

 
5,899

Net loss attributable to common shareholders
(1,685
)
 
(1,308
)
 
(1,245
)
 
(824
)*
Basic loss per common share
$
(0.05
)
 
$
(0.04
)
 
$
(0.04
)
 
$
(0.03
)
 
 
 
 
 
 
 
 
Year ended December 31, 2016
 
 
 
 
 
 
 
Sales
$
7,775

 
$
9,295

 
$
10,063

 
$
9,494

Gross profit
3,323

 
4,700

 
5,062

 
4,830

Net loss attributable to common shareholders
(1,944
)
 
(519
)
 
(964
)
 
(523
)
Basic loss per common share
$
(0.07
)
 
$
(0.02
)
 
$
(0.04
)
 
$
(0.02
)