General and Basis of Presentation - Inventory, Restr Cash (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Dec. 31, 2016
Inventory, Net [Abstract]
Inventory, Gross	$ 16,821	$ 14,471
Less: Inventory reserves	(2,589)	(1,944)
Inventory, net, Total	14,232	12,527
Restricted Cash and Cash Equivalents [Abstract]
Restricted cash	46,909	32,213
ATMs [Member]
Inventory, Net [Abstract]
Inventory, Gross	3,774	1,915
ATM Parts And Supplies [Member]
Inventory, Net [Abstract]
Inventory, Gross	$ 13,047	$ 12,556