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Dividends on Common Stock
3 Months Ended
Mar. 31, 2018
Dividends, Common Stock [Abstract]  
Dividend on Common Stock [Text Block]
5. Dividends on Common Stock
 
First Defiance declared and paid a $0.30 per common stock dividend in the first quarter of 2018 and declared and paid a $0.25 per common stock dividend in the first quarter of 2017.