Basis of Presentation and Summary of Significant Accounting Polices - Inventory (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Inventory, Net [Abstract]
Total inventory	$ 8,362	$ 11,903
Less: Inventory reserves	(1,764)	(1,285)
Inventory, net	6,598	10,618
ATMs
Inventory, Net [Abstract]
Total inventory	1,837	3,425
ATM spare parts and supplies
Inventory, Net [Abstract]
Total inventory	$ 6,525	$ 8,478