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UNAUDITED QUARTERLY FINANCIAL INFORMATION (Tables)
 12 Months Ended
Dec. 31, 2014
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Information
 
2014
 
2013
 
Fourth
Quarter
 
Third
Quarter
 
Second
Quarter
 
First
Quarter
 
Fourth
Quarter
 
Third
Quarter
 
Second
Quarter
 
First
Quarter
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
(in thousands, except per share amounts)
Total revenue
$
93,530

 
$
87,086

 
$
85,432

 
$
82,971

 
$
92,636

 
$
80,354

 
$
79,464

 
$
77,945

Total cost of goods sold
34,588

 
35,566

 
36,588

 
36,416

 
37,613

 
36,515

 
37,293

 
37,940

Net income (loss)
5,167

 
2,384

 
(911
)
 
(10,474
)
 
9,373

 
(4,156
)
 
(6,107
)
 
(15,437
)
Basic net income (loss) per common share
$
0.07

 
$
0.03

 
$
(0.01
)
 
$
(0.14
)
 
$
0.13

 
$
(0.06
)
 
$
(0.09
)
 
$
(0.22
)
Diluted net income (loss) per common share
$
0.05

 
$
0.03

 
$
(0.01
)
 
$
(0.14
)
 
$
0.11

 
$
(0.06
)
 
$
(0.09
)
 
$
(0.22
)