Consolidated Statement of Changes in Equity (USD $)
In Thousands, unless otherwise specified
Total
USD ($)
Equity Offering
USD ($)
Contingent Consideration Classified as Equity
USD ($)
Common Stock
USD ($)
Common Stock
Equity Offering
USD ($)
Common Stock
Contingent Consideration Classified as Equity
Additional Paid-In Capital
USD ($)
Additional Paid-In Capital
Equity Offering
USD ($)
Additional Paid-In Capital
Contingent Consideration Classified as Equity
USD ($)
Treasury Stock
USD ($)
Purchased Warrants
USD ($)
Accumulated Deficit
USD ($)
Accumulated Other Comprehensive Income (Loss)
USD ($)
Non-controlling Interest
USD ($)
Beginning Balance at Dec. 31, 2010 $ 303,077     $ 13     $ 747,301     $ (15,089) $ (6,844) $ (423,859) $ 99 $ 1,456
Beginning Balance (in shares) at Dec. 31, 2010       12,749           1,331 1,133      
Stock-based compensation 2,863           2,863              
Issuance of common stock to employees       19                    
Issuance of common stock for acquisitions 16,925           16,925              
Issuance of common stock for acquisitions (in shares)       271                    
Purchase of common stock (4,414)                 (4,414)        
Purchase of common stock (in shares)                   100        
Exercise of warrants 47,912     1     47,911              
Exercise of warrants (in shares)       878                    
Net income (loss) (24,462)                     (23,006)   (1,456)
Accumulated other comprehensive loss:                            
Unrealized loss from available for sale securities (112)                       (112)  
Foreign currency translation gain 21                       21  
Ending Balance at Dec. 31, 2011 341,810     14     815,000     (19,503) (6,844) (446,865) 8  
Ending Balance (in shares) at Dec. 31, 2011       13,917           1,431 1,133      
Stock-based compensation 3,610           3,610              
Stock-based compensation (in shares)       10                    
Issuance of common stock for acquisitions 417,733     11     417,722              
Issuance of common stock for acquisitions (in shares)       10,664                    
Issuance of common stock   74,448 7,770   2     74,446 7,770          
Issuance of common stock (in shares)         1,820 173                
Exercise of warrants 32           32              
Exercise of warrants (in shares)       28                    
Shares returned from escrow (161)           (161)              
Net income (loss) 2,527                     2,527    
Accumulated other comprehensive loss:                            
Reclassification of net loss from sales of available-for sale-securities included in earnings (8)                       (8)  
Ending Balance at Dec. 31, 2012 847,761     27     1,318,419     (19,503) (6,844) (444,338)    
Ending Balance (in shares) at Dec. 31, 2012       26,612           1,431 1,133      
Stock-based compensation 3,708           3,708              
Issuance of common stock to employees       15                    
Issuance of common stock for acquisitions 24,286           24,286              
Issuance of common stock for acquisitions (in shares)       741                    
Issuance of common stock     47           47          
Issuance of common stock (in shares)           1                
Issuance of common stock for legal settlement 1,621           1,621              
Issuance of common stock for legal settlement (in shares)       56                    
Shares returned from escrow (28)           (28)              
Retirement of purchased warrants             (6,844)       6,844      
Retirement of purchased warrants (in shares)                     (1,133)      
Distribution to noncontrolling shareholder (735)                     (735)    
Net income (loss) (232,291)                     (232,291)    
Ending Balance at Dec. 31, 2013 $ 644,369     $ 27     $ 1,341,209     $ (19,503)   $ (677,364)    
Ending Balance (in shares) at Dec. 31, 2013       27,425           1,431