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Unaudited Interim Condensed Consolidated Statements of Stockholders Equity (USD $)
In Thousands, except Share data
Total
Common Stock
Additional Paid-in Capital
Accumulated deficit
BALANCE, value at Dec. 31, 2012 $ 116,746 $ 54 $ 520,946 $ (404,254)
BALANCE, shares at Dec. 31, 2012   5,400,810    
Net income / (loss) 1,964     1,964
Issuance of vested and non-vested shares and amortization of stock-based compensation, value (Note 13) 600   600  
Issuance of vested and non-vested shares and amortization of stock-based compensation, shares (Note 13)   12,000    
BALANCE, value at Jun. 30, 2013 119,310 54 521,546 (402,290)
BALANCE, shares at Jun. 30, 2013   5,412,810    
BALANCE, value at Dec. 31, 2013 266,106 291 668,219 (402,404)
BALANCE, shares at Dec. 31, 2013   29,059,671    
Net income / (loss) (3,870)     (3,870)
Issuance of common stock - Acquisition of 33% of Interchart (Note 3), value 328   328  
Issuance of common stock - Acquisition of 33% of Interchart (Note 3), shares   22,598    
Issuance of vested and non-vested shares and amortization of stock-based compensation, value (Note 13) 1,903 4 1,899  
Issuance of vested and non-vested shares and amortization of stock-based compensation, shares (Note 13)   411,500    
BALANCE, value at Jun. 30, 2014 $ 264,467 $ 295 $ 670,446 $ (406,274)
BALANCE, shares at Jun. 30, 2014   29,493,769