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Consolidated Statements of Stockholders' Equity - USD ($)
$ in Thousands
Total
Common stock
Additional paid-in capital
Accumulated deficit
Accumulated other comprehensive income (loss)
GENBAND
GENBAND
Common stock
GENBAND
Additional paid-in capital
Edgewater Networks, Inc.
Edgewater Networks, Inc.
Common stock
Edgewater Networks, Inc.
Additional paid-in capital
Anova Data, Inc.
Anova Data, Inc.
Additional paid-in capital
Balance (in shares) at Dec. 31, 2016   49,041,881                      
Balance at Dec. 31, 2016 $ 219,122 $ 49 $ 1,250,744 $ (1,037,174) $ 5,503                
Increase (Decrease) in Stockholders' Equity                          
Issuance of common stock in connection with employee stock purchase plan (in shares)   249,621                      
Issuance of common stock in connection with employee stock purchase plan 1,252   1,252                    
Exercise of stock options (in shares)   105,688                      
Exercise of stock options 617   617                    
Vesting of restricted stock awards and units (in shares)   2,160,553                      
Vesting of restricted stock awards and units 0                    
Vesting of performance-based stock awards and units (in shares)   145,357                      
Vesting of performance-based stock awards and units 0                        
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations (in shares)   (807,952)                      
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations (7,523)   (7,523)                    
Shares issued as consideration in connection with acquisition (in shares)           50,857,708              
Shares issued as consideration in connection with acquisition           $ 413,982 $ 5 $ 413,977          
Reclassification between Common stock and Additional paid-in capital to record change in par value of common stock 0 $ (44) 44                    
Stock-based compensation expense 25,657   25,657                    
Other comprehensive income (loss) (2,434)       (2,434)                
Net loss (35,252)     (35,252)                  
Balance (in shares) at Dec. 31, 2017   101,752,856                      
Balance at Dec. 31, 2017 615,421 $ 10 1,684,768 (1,072,426) 3,069                
Increase (Decrease) in Stockholders' Equity                          
Exercise of stock options (in shares)   15,935                      
Exercise of stock options 73   73                    
Vesting of restricted stock awards and units (in shares)   1,278,062                      
Vesting of restricted stock awards and units 0                    
Vesting of performance-based stock awards and units (in shares)   57,768                      
Vesting of performance-based stock awards and units 0                        
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations (in shares)   (524,516)                      
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations (2,024)   (2,024)                    
Shares issued as consideration in connection with acquisition (in shares)                 4,235,531        
Shares issued as consideration in connection with acquisition                 $ 30,000 $ 1 $ 29,999    
Assumption of equity awards in connection with acquisition of Edgewater Networks, Inc.                 $ 747   $ 747    
Stock-based compensation expense 10,013   10,013                    
Other comprehensive income (loss) 634       634                
Net loss $ (76,810)     (76,810)                  
Balance (in shares) at Dec. 31, 2018 106,815,636 106,815,636                      
Balance at Dec. 31, 2018 $ 590,298 $ 11 1,723,576 (1,136,992) 3,703                
Increase (Decrease) in Stockholders' Equity                          
Issuance of common stock in connection with employee stock purchase plan (in shares)   282,646                      
Issuance of common stock in connection with employee stock purchase plan 863   863                    
Exercise of stock options (in shares)   127,334                      
Exercise of stock options 235   235                    
Vesting of restricted stock awards and units (in shares)   1,504,707                      
Vesting of restricted stock awards and units 0                        
Vesting of performance-based stock awards and units (in shares)   9,466                      
Vesting of performance-based stock awards and units 0                        
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations (in shares)   (240,673)                      
Shares of restricted stock returned to the Company under net share settlements to satisfy tax withholding obligations (1,193)   (1,193)                    
Shares issued as consideration in connection with acquisition (in shares)                       2,948,793  
Shares issued as consideration in connection with acquisition                       $ 15,186 $ 15,186
Repurchase and retirement of common stock (in shares)   (975,914)                      
Repurchase and retirement of common stock (4,536) (4,536)                    
Reclassification of liability to equity for bonuses converted to stock awards 1,052   1,052                    
Stock-based compensation expense 12,601   12,601                    
Other comprehensive income (loss) (1,176)       (1,176)                
Net loss $ (130,075)     (130,075)                  
Balance (in shares) at Dec. 31, 2019 110,471,995 110,471,995                      
Balance at Dec. 31, 2019 $ 483,255 $ 11 $ 1,747,784 $ (1,267,067) $ 2,527