XML 65 R54.htm IDEA: XBRL DOCUMENT v3.19.1
Net Income Per Share (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2018
Numerator:      
Net income (loss) attributable to AXT, Inc. $ (1,104) $ 2,875  
Less: Preferred stock dividends (44) (44)  
Net income (loss) available to common stockholders $ (1,148) $ 2,831  
Weighted-average number of common shares outstanding:      
Denominator for basic net income (loss) per share - weighted-average common shares (in shares) 39,352,000 38,941,000  
Effect of dilutive securities:      
Denominator for dilutive net income (loss) per common share (in shares) 39,352,000 40,364,000  
Net income (loss) attributable to AXT, Inc. per common share:      
Basic (in dollars per share) $ (0.03) $ 0.07  
Diluted (in dollars per share) $ (0.03) $ 0.07  
Preferred stock, shares issued (in shares) 883,000   883,000
Preferred stock, shares outstanding (in shares) 883,000   883,000
Preferred stock, par value (in dollars per share) $ 0.001   $ 0.001
Preferred stock, value $ 3,532   $ 3,532
Cumulative annual dividend rate (as a percent) 5.00%   5.00%
Liquidation preference over common stock (in dollars per share) $ 4   $ 4
Options      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Securities excluded from diluted net income (loss) per share as the impact is anti-dilutive (in shares) 2,654,000 184,000  
Restricted Stock Awards      
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]      
Securities excluded from diluted net income (loss) per share as the impact is anti-dilutive (in shares) 644,000 240,000  
Options      
Effect of dilutive securities:      
Effect of dilutive securities (in shares)   1,289,000  
Restricted Stock Awards      
Effect of dilutive securities:      
Effect of dilutive securities (in shares)   134,000