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SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Tables)
 12 Months Ended
Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Data
The following tables present selected quarterly financial data for the years ended December 31, 2018 and 2017 (in thousands, except per share amounts):
 
Three Months Ended
 
March 31,
2018
 
June 30,
2018
 
September 30,
2018
 
December 31,
2018
Total revenues
$
74,607

 
$
84,107

 
$
83,448

 
$
95,115

Cost of goods sold
22,885

 
20,916

 
19,065

 
23,979

Total operating expenses
81,544

 
77,566

 
79,400

 
82,852

Net income (loss)
(10,680
)
 
2,564

 
(640
)
 
8,285

Basic and diluted net income (loss) per common share
$
(0.26
)
 
$
0.06

 
$
(0.02
)
 
$
0.20

 
Three Months Ended
 
March 31,
2017
 
June 30,
2017
 
September 30,
2017
 
December 31,
2017
Total revenues
$
69,283

 
$
70,934

 
$
67,335

 
$
79,078

Cost of goods sold
24,581

 
23,811

 
18,228

 
21,295

Total operating expenses
83,333

 
86,714

 
70,907

 
70,613

Net income (loss)
(19,866
)
 
(19,743
)
 
(7,597
)
 
4,595

Basic and diluted net income (loss) per common share
$
(0.52
)
 
$
(0.49
)
 
$
(0.19
)
 
$
0.11

For periods where the Company reported a net loss, no potentially dilutive securities were included in the computation of diluted net loss per share.