XML 19 R5.htm IDEA: XBRL DOCUMENT v3.8.0.1
CONSOLIDATED STATEMENT OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' EQUITY - USD ($)
shares in Thousands, $ in Thousands
Total
Convertible Preferred Stock
Common Stock
Common Stock
IPO
Additional Paid-In Capital
Retained Earnings (Accumulated Deficit)
Balance at beginning of period at Dec. 31, 2014   $ 27,997        
Balance at beginning of period (in shares) at Dec. 31, 2014   66,330 10,166 [1]      
Balance at beginning of period at Dec. 31, 2014 $ (6,131)       $ 488 $ (6,619)
Modification to Series B participation rights   $ (3,793)        
Modification to Series B participation rights 3,793         3,793
Exercise of common stock options (in shares) [1]     711      
Exercise of common stock options 166       166  
Issuance of common stock to employee (in shares) [1]     7      
Stock-based compensation 385       385  
Net income 15,929         15,929
Balance at end of period at Dec. 31, 2015   $ 24,204        
Balance at end of period (in shares) at Dec. 31, 2015   66,330 10,884 [1]      
Balance at end of period at Dec. 31, 2015 14,142       1,039 13,103
Exercise of common stock options (in shares) [1]     785      
Exercise of common stock options 488       488  
Issuance of series C convertible preferred stock, net of issuance costs   $ 59,871        
Issuance of series C convertible preferred stock, net of issuance costs (in shares)   11,501        
Reclassification of preferred stock warrant liability upon net exercise of warrant   $ 3,789        
Repurchase of convertible preferred stock (47,209) $ (4,623)     (1,168) (46,041)
Repurchase of convertible preferred stock (in shares)   (12,384)        
Repurchase and retirement of common stock (2,362)         (2,362)
Repurchase and retirement of common stock (in shares) [1]     (189)      
Issuance of common stock to employee 73,634       73,634  
Issuance of common stock to employee (in shares) [1]       4,667    
Stock-based compensation 5,144       5,144  
Conversion of convertible preferred stock to Class B common stock in connection with IPO 83,241       83,241  
Conversion of convertible preferred stock to Class B common stock in connection with IPO (in shares)   (66,236) 22,079 [1]      
Conversion of warrant for convertible preferred stock to a warrant for Class B common stock in connection with IPO 12,596       12,596  
Issuance of common stock under employee stock purchase plan 4,224       4,224  
Issuance of common stock under employee stock purchase plan (in shares) [1]     276      
Grants of restricted stock (in shares) [1]     180      
Net income 20,482         20,482
Balance at end of period (in shares) at Dec. 31, 2016 [1]     39,131      
Balance at end of period at Dec. 31, 2016 164,380       179,198 (14,818)
Reclassification of preferred stock warrant liability upon net exercise of warrant (in shares)   789        
Conversion of convertible preferred stock to Class B common stock in connection with IPO   $ (83,241)        
Net exercise of warrant to purchase Class B common stock (in shares) [1]     449      
Exercise of common stock options (in shares) [1]     1,932      
Exercise of common stock options 2,565       2,565  
Stock-based compensation 21,860       21,860  
Issuance of common stock under employee stock purchase plan 6,997       6,997  
Issuance of common stock under employee stock purchase plan (in shares) [1]     433      
Restricted stock, net of forfeitures and shares withheld for taxes (1,017)       (1,017)  
Restricted stock, net of forfeitures and shares withheld for taxes (in shares) [1]     145      
Net income 50,798         50,798
Balance at end of period (in shares) at Dec. 31, 2017 [1]     41,641      
Balance at end of period at Dec. 31, 2017 $ 245,583       $ 209,603 $ 35,980
[1] See Note 9-Capitalization for discussion of the establishment of the Company’s two classes of common stock and the reclassification of its common stock into Class B common stock prior to the Company’s initial public offering (“IPO”) in September 2016.