Quarterly Results of Operations
 12 Months Ended
Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]  
Quarterly Results of Operations
Quarterly Financial Information (Unaudited)
The following following table contains selected unaudited financial data for each quarter of 2013 and 2012. The unaudited information should be read in conjunction with the Company’s financial statements and related notes included elsewhere in this report. The Company believes that the following unaudited information reflects all normal recurring adjustments necessary for a fair presentation of the information for the periods presented. The operating results for any quarter are not necessarily indicative of results for any future period.

 
Three Months Ended
 
Dec 31, 2013
 
Sept 30, 2013
 
June 30, 2013
 
March 31, 2013
 
Dec 31, 2012
 
Sept 30, 2012
 
June 30, 2012
 
March 31, 2012
 
(in thousands, except per share amounts)
Total revenues
$
81,459

 
$
61,079

 
$
49,884

 
$
40,018

 
$
41,806

 
$
32,126

 
$
29,116

 
$
24,685

Gross profit
75,409

 
56,501

 
45,538

 
36,468

 
38,423

 
29,317

 
26,617

 
23,014

Net income (loss)
11,245

 
2,441

 
(2,575
)
 
(4,035
)
 
(1,056
)
 
367

 
1,059

 
1,057

Net income (loss) per share attributable to common stockholders:
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Basic
$
0.18

 
$
0.04

 
$
(0.05
)
 
$
(0.12
)
 
$
(0.03
)
 
$
0.00

 
$
0.01

 
$
0.01

Diluted
$
0.16

 
$
0.03

 
$
(0.05
)
 
$
(0.12
)
 
$
(0.03
)
 
$
0.00

 
$
0.01

 
$
0.01