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Consolidated Statements of Changes In Shareholders' Equity (Parenthetical) - shares
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Statement of Stockholders' Equity [Abstract]    
Stock issued during period, shares, Employee Stock Purchase Plans 4,465 4,162
Stock issued during period, shares, acquisitions   723,851
Stock issued during period, shares, Restricted stock activity 2,115 875