Quarterly report pursuant to Section 13 or 15(d)

Per Share Data - Computations of Basic and Diluted Per Share (Details)

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Per Share Data - Computations of Basic and Diluted Per Share (Details) - $ / shares
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Earnings Per Share [Abstract]        
Basic weighted-average shares 184,743,052 181,739,505 184,870,096 181,621,442
Effect of dilutive securities:        
Options to purchase common stock 0 0 0 13,829,376
Warrants to purchase common stock 0 0 0 7,276,623
Dilutive potential common shares 0 0 0 21,105,999
Weighted average common shares outstanding and dilutive potential common shares 184,743,052 181,739,505 184,870,096 202,727,441
Basic (in dollars per share) $ (0.05) $ 0.00 $ (0.11) $ 0.00
Diluted (in dollars per share) $ (0.05) $ 0.00 $ (0.11) $ 0.00