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Consolidated Balance Sheets [Parenthetical] - $ / shares
Dec. 31, 2015
Dec. 31, 2014
Preferred stock, par value (in dollars per share) $ 4 $ 4
Preferred stock, liquidation preference (in dollars per share) $ 1,000 $ 1,000
Preferred stock, shares authorized (in shares) 1,000,000 1,000,000
Preferred stock, shares issued (in shares) 5,715 14,738
Preferred stock, shares outstanding (in shares) 5,715 14,738
Common stock, par value (in dollars per share) $ 4 $ 4
Common stock, shares authorized (in shares) 10,000,000 10,000,000
Common stock, shares issued (in shares) 1,417,775 350,622
Common stock, shares outstanding (in shares) 1,417,775 350,622