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Employee Benefit Plans (FY) (Details 3) - Restricted Stock [Member]
12 Months Ended
Dec. 31, 2017
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Nonvested, beginnning of period (in shares) 0
Granted (in shares) 27,500
Vested (in shares) 0
Forfeited/expired (in shares) 0
Nonvested, end of period (in shares) 27,500