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SELECTED UNAUDITED QUARTERLY FINANCIAL INFORMATION (Tables)
 12 Months Ended
Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]  
Schedule of Quarterly Financial Information
The following tables show a summary of the Company’s quarterly financial information for each of the four quarters of 2019 and 2018 (in thousands, except per share data):
 
Three Months Ended
 
March 31, 2019
 
June 30, 2019
 
September 30, 2019
 
December 31, 2019
Net revenues
$
100,150

 
$
134,094

 
$
180,057

 
$
210,032

Cost of revenues
66,811

 
88,775

 
115,351

 
132,151

Gross profit
33,339

 
45,319

 
64,706

 
77,881

Operating expenses:
 
 
 
 
 
 
 
Research and development
8,524

 
9,604

 
11,085

 
11,168

Sales and marketing
7,433

 
9,054

 
9,551

 
10,690

General and administrative
9,880

 
8,583

 
9,895

 
10,450

Restructuring charges
368

 
631

 
469

 
1,131

Total operating expenses
26,205

 
27,872

 
31,000

 
33,439

Income from operations
7,134

 
17,447

 
33,706

 
44,442

Other expense, net
 
 
 
 
 
 
 
Interest Income
211

 
593

 
894

 
815

Interest expense
(3,751
)
 
(1,351
)
 
(2,286
)
 
(2,303
)
Other income (expense)
(481
)
 
(5,480
)
 
(943
)
 
1,467

Total other expense, net
(4,021
)
 
(6,238
)
 
(2,335
)
 
(21
)
Income before income taxes
3,113

 
11,209

 
31,371

 
44,421

Income tax benefit (provision)
(348
)
 
(591
)
 
(272
)
 
72,245

Net income
$
2,765

 
$
10,618

 
$
31,099

 
$
116,666

Net income per share, basic
$
0.03

 
$
0.09

 
$
0.25

 
$
0.95

Net income per share, diluted
$
0.02

 
$
0.08

 
$
0.23

 
$
0.88


 
Three Months Ended
 
March 31, 2018
 
June 30, 2018
 
September 30, 2018
 
December 31, 2018
Net revenues
$
69,972

 
$
75,896

 
$
78,002

 
$
92,289

Cost of revenues
51,657

 
53,195

 
52,738

 
64,124

Gross profit
18,315

 
22,701

 
25,264

 
28,165

Operating expenses:
 
 
 
 
 
 
 
Research and development
7,620

 
9,462

 
8,165

 
7,340

Sales and marketing
6,227

 
6,828

 
7,375

 
6,617

General and administrative
6,943

 
6,969

 
7,510

 
7,664

Restructuring charges
—

 
—

 
2,588

 
1,541

Total operating expenses
20,790

 
23,259

 
25,638

 
23,162

Income (loss) from operations
(2,475
)
 
(558
)
 
(374
)
 
5,003

Other expense, net
 
 
 
 
 
 
 
Interest income
93

 
154

 
321

 
490

Interest expense
(2,385
)
 
(2,423
)
 
(2,790
)
 
(3,095
)
Other expense, net
(126
)
 
(572
)
 
(379
)
 
(1,113
)
Total other expense, net
(2,418
)
 
(2,841
)
 
(2,848
)
 
(3,718
)
Income (loss) before income taxes
(4,893
)
 
(3,399
)
 
(3,222
)
 
1,285

Provision for income taxes
(235
)
 
(339
)
 
(248
)
 
(576
)
Net income (loss)
$
(5,128
)
 
$
(3,738
)
 
$
(3,470
)
 
$
709

Net income (loss) per share, basic
$
(0.06
)
 
$
(0.04
)
 
$
(0.03
)
 
$
0.01

Net income (loss) per diluted share
$
(0.06
)
 
$
(0.04
)
 
$
(0.03
)
 
$
0.01