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Goodwill (Tables)
6 Months Ended
Jun. 30, 2019
Goodwill and Intangible Assets Disclosure [Abstract]  
Summary of the activity in goodwill and intangibles
($ in thousands)  Carrying Amount 
     
Balance, December 31, 2018  $16,353 
Acquired goodwill   1,439 
      
Balance, June 30, 2019  $17,792