1
                                                                    EXHIBIT 11.1


                      COMPUTATION OF NET LOSS PER SHARE

                                                                1997           1996           1995      
                                                            -------------  -------------  ------------- 
                                                               (IN THOUSANDS, EXCEPT PER SHARE DATA)    
                                                                                            
Basic:                                                                                                  
    Net loss attributable to common shares.......                $(8,263)       $(8,796)       $(3,011) 
                                                              ==========     ==========     ==========  
    Weighted average common shares outstanding...                 18,651         15,429          7,782  
                                                              ==========     ==========     ==========  
    Per share amount.............................                $ (0.44)       $ (0.57)       $ (0.39) 
                                                              ==========     ==========     ==========  
Diluted:                                                                                                
    Net loss.....................................                $(8,263)       $(8,796)       $(3,011) 

    Net effect of convertible debentures based                                                               
    on the if-converted method, assuming                                                                     
    100% conversion:                                                                                         
    $35,000,000, 6.75%, due 2006.................                  2,363          1,457             --  
    $50,000,000, 7.0%, due 2004..................                  2,178             --             --  
    $125,000,000, 5.25%, due 2002................                    219             --             --  
                                                              ----------     ----------     ----------  
Net loss attributable to common shares...........                $(3,504)       $(7,339)       $(3,011) 
                                                              ==========     ==========     ==========  

Weighted average common shares outstanding.......                 18,651         15,429          7,782  

    Net effect of convertible debentures based                                                               
    on the if-converted method, assuming                                                                     
    100% conversion:                                                                                         
    $35,000,000, 6.75%, due 2006.................                  1,561            949             --  
    $50,000,000, 7.0%, due 2004..................                  1,515             --             --  
    $125,000,000, 5.25%, due 2002................                    143             --             --  

    Net effect of dilutive stock options based                                                               
    on the treasury stock method, using                                                                      
    average market price.........................                    380            314            176  
                                                              ----------     ----------     ----------  
Totals...........................................                 22,250         16,692          7,958  
                                                              ==========     ==========     ==========  
Per share amount.................................                $ (0.16)       $ (0.44)       $ (0.38) 
                                                              ==========     ==========     ==========  






                                      48