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Consolidated Balance Sheets (Parenthetical) - shares
Jun. 30, 2016
Dec. 31, 2015
Preferred stock, shares authorized 10,000,000 10,000,000
Preferred stock, shares outstanding 0 0
Common stock, shares authorized 10,000,000 10,000,000
Common stock, shares issued 2,916,195 2,907,455
Common stock, shares outstanding 2,860,157 2,851,417