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Consolidated Statement of Stockholders' Equity - USD ($)
shares in Thousands, $ in Thousands
Total
Common Equity
Additional Paid-In Capital
Treasury Stock
Retained Earnings (Accumulated Deficit)
Accumulated Other Comprehensive Income (Loss)
Non- controlling Interest
Beginning balance (in shares) at Dec. 31, 2013   14,226          
Beginning balance at Dec. 31, 2013 $ 54,409 $ 14 $ 98,598 $ (378) $ (29,773) $ (14,052) $ 0
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Share-based compensation expense 11,028   11,028        
Proceeds from the exercise of warrants and stock options (in shares)   7,589          
Exercise of warrants and stock options 24,348 $ 8 24,340        
Taxes paid in lieu of shares issued for share-based compensation (47)   (47)        
Preferred stock dividend and accretion (2,049)   (2,049)        
Preferred stock beneficial conversion feature 659   659        
Issuance of common stock (in shares)   1,500          
Issuance of common stock 6,000 $ 2 5,998        
Issuance of restricted stock (in shares)   498          
Acquisition of noncontrolling interest 67,106           67,106
Additional acquisition of noncontrolling interest (41,036)           (41,036)
Excess fair value over book value of purchased noncontrolling interest     3,421       (3,421)
Actuarial loss on pension plan 426         426  
Net loss (11,832)       (14,391)   2,559
Foreign currency translation adjustment (6,168)         (6,168)  
Unrealized loss on available-for-sale securities 1,551         1,551  
Ending balance at Dec. 31, 2014 104,395 $ 24 141,948 (378) (44,164) (18,243) 25,208
Ending balance (in shares) at Dec. 31, 2014   23,813          
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Share-based compensation expense 11,102   11,102        
Dividend to noncontrolling interest (1,835)           (1,835)
Preferred stock dividend and accretion (4,285)   (4,285)        
Preferred stock beneficial conversion feature (375)   (375)        
Issuance of common stock (in shares)   8,459          
Issuance of common stock 53,787 $ 8 53,779        
Issuance of common stock for acquisition of business (in shares)   1,007          
Issuance of common stock for acquisition of business 5,381 $ 1 5,380        
Issuance of restricted stock (in shares)   1,539          
Issuance of restricted stock 2 $ 2          
Conversion of preferred stock to common stock (in shares)   432          
Conversion of preferred stock to common stock 1,839   1,839        
Additional acquisition of noncontrolling interest (475)           (475)
Excess fair value over book value of purchased noncontrolling interest     89       (89)
Actuarial loss on pension plan (512)         (512)  
Net loss (35,762)       (35,565)   (197)
Net income attributable to redeemable noncontrolling interest 882           882
Foreign currency translation adjustment (8,591)         (8,591)  
Unrealized loss on available-for-sale securities (8,029)         (8,029)  
Ending balance at Dec. 31, 2015 117,524 $ 35 209,477 (378) (79,729) (35,375) 23,494
Ending balance (in shares) at Dec. 31, 2015   35,250          
Increase (Decrease) in Stockholders' Equity [Roll Forward]              
Share-based compensation expense 8,348   8,348        
Dividend to noncontrolling interest (759)           (759)
Fair value adjustment of redeemable noncontrolling interest (489)   (489)        
Proceeds from the exercise of warrants and stock options (in shares)   2          
Exercise of warrants and stock options 8   8        
Taxes paid in lieu of shares issued for share-based compensation, shares   (228)          
Taxes paid in lieu of shares issued for share-based compensation (1,009)     (1,009)      
Preferred stock dividend and accretion (2,948)   (2,948)        
Amortization of issuance costs and beneficial conversion feature (608)   (608)        
Issuance of restricted stock (in shares)   269          
Conversion of preferred stock to common stock (in shares)   6,518          
Conversion of preferred stock to common stock 21,372 $ 7 21,365        
Acquisition of noncontrolling interest 2,214   200       2,014
Sale of controlling interest 6,069           6,069
Excess fair value over book value of purchased noncontrolling interest     6,132       (6,132)
Actuarial loss on pension plan (2,606)         2,606  
Net loss (97,431)       (94,549)   (2,882)
Net income attributable to redeemable noncontrolling interest 1,420           (1,420)
Foreign currency translation adjustment (4,911)         (4,911)  
Unrealized loss on available-for-sale securities 21,245         21,245  
Ending balance at Dec. 31, 2016 $ 67,439 $ 42 $ 241,485 $ (1,387) $ (174,278) $ (21,647) $ 23,224
Ending balance (in shares) at Dec. 31, 2016   41,811