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Route and Customer Acquisition Costs - Schedule of Customer Contract Acquired (Details) - USD ($)
$ in Thousands
Jun. 30, 2020
Dec. 31, 2019
Dec. 31, 2018
Revenue from Contract with Customer [Abstract]      
Cost $ 28,167 $ 28,501 $ 27,726
Accumulated amortization (11,707) (11,102) (13,732)
Route and customer acquisition costs, net $ 16,460 $ 17,399 $ 13,994