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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2015 | Dec. 31, 2014
Common stock, par value | $ 0.10 | $ 0.10
Common stock, shares authorized | 75,000,000 | 75,000,000
Common stock, shares issued | 27,109,544 | 26,968,212
Treasury stock, common shares | 4,320,462 | 4,320,462
Series B Preferred Stock [Member] |  |
Convertible preferred stock dividend rate | 12.00% | 12.00%
Preferred stock, shares issued | 20,000 | 20,000
Preferred stock, shares outstanding | 20,000 | 20,000
Series B cumulative, convertible preferred stock, par value | $ 100 | $ 100
Series D Preferred Stock [Member] |  |
Convertible preferred stock dividend rate | 6.00% | 6.00%
Preferred stock, shares issued | 1,000,000 | 1,000,000
Preferred stock, shares outstanding | 1,000,000 | 1,000,000
Series D cumulative, convertible Class C preferred stock, par value |  |

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