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Selected Quarterly Financial Data (unaudited)
 12 Months Ended
Dec. 31, 2015
Selected Quarterly Financial Information [Abstract]  
Selected Quarterly Financial Data (unaudited)
Selected Quarterly Financial Data (unaudited)
The following table sets forth certain unaudited quarterly results of operations for the years ended December 31, 2015 and 2014.  In the opinion of management, this information has been prepared on the same basis as the audited consolidated financial statements and all necessary adjustments, consisting only of normal recurring adjustments, have been included in the amounts below for a fair statement of the quarterly information when read in conjunction with the audited consolidated financial statements and related notes included elsewhere in this Annual Report on Form 10-K:
 
Three Months Ended
 
Dec 31,
2015
 
Sep 30,
2015
 
Jun 30,
2015
 
Mar 31,
2015
 
Dec 31,
2014
 
Sep 30,
2014
 
Jun 30,
2014
 
Mar 31,
2014
 
(in thousands, except per share data)
Revenue:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Consumer revenue
$
148,289

 
$
144,648

 
$
138,329

 
$
128,201

 
$
122,745

 
$
116,115

 
$
109,338

 
$
100,995

Enterprise revenue
7,863

 
7,304

 
6,628

 
6,207

 
6,941

 
6,916

 
6,375

 
6,591

Total revenue
156,152

 
151,952

 
144,957

 
134,408

 
129,686

 
123,031

 
115,713

 
107,586

Gross profit
122,266

 
117,964

 
110,031

 
99,852

 
98,939

 
92,704

 
86,322

 
77,629

Income (loss) from operations
16,864

 
(87,350
)
 
865

 
(15,132
)
 
6,299

 
9,533

 
(2,561
)
 
(7,205
)
Net income (loss)
22,780

 
(65,145
)
 
520

 
(9,158
)
 
2,838

 
5,450

 
(1,498
)
 
(4,295
)
Basic net income (loss) per share
$
0.24

 
$
(0.68
)
 
$
0.01

 
$
(0.10
)
 
$
0.03

 
$
0.06

 
$
(0.02
)
 
$
(0.05
)
Diluted net income (loss) per share
$
0.23

 
$
(0.68
)
 
$
0.01

 
$
(0.10
)
 
$
0.03

 
$
0.06

 
$
(0.02
)
 
$
(0.05
)