Identifiable Intangible Assets and Goodwill (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2017 USD ($) Segment	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Finite-Lived Intangible Assets [Line Items]
Software costs capitalized	$ 1,100	$ 700	$ 3,300	$ 1,900
Amortization of capitalized software costs	400	300	1,100	800
Amortization of identifiable intangible assets	241	$ 241	$ 724	$ 724
Number of operating segments | Segment			2
Goodwill	11,051		$ 11,051		$ 11,051
Components of identifiable intangible assets [Abstract]
Intangible assets - gross	19,342		19,342		16,074
Less accumulated amortization	(7,376)		(7,376)		(5,508)
Total	11,966		11,966		10,566
Total intangible assets, net	12,366		12,366		10,966
Future amortization of intangible assets assuming straight-line amortization of capitalized software costs [Abstract]
2017	618		618
2018	2,379		2,379
2019	1,905		1,905
2020	1,487		1,487
2021	1,031		1,031
Thereafter	4,546		4,546
Total	11,966		$ 11,966		10,566
Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life			3 years
Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life			7 years
Brink Software [Member]
Finite-Lived Intangible Assets [Line Items]
Amortization of identifiable intangible assets	241		$ 724
Acquired and Internally Developed Software Costs [Member]
Components of identifiable intangible assets [Abstract]
Intangible assets - gross	19,152		$ 19,152		15,884
Acquired and Internally Developed Software Costs [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life			3 years
Acquired and Internally Developed Software Costs [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life			7 years
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life			7 years
Components of identifiable intangible assets [Abstract]
Intangible assets - gross	160		$ 160		160
Non-competition Agreement [Member]
Finite-Lived Intangible Assets [Line Items]
Estimated Useful Life			1 year
Components of identifiable intangible assets [Abstract]
Intangible assets - gross	30		$ 30		30
Restaurant/Retail [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill	10,315		10,315		10,315
Government [Member]
Finite-Lived Intangible Assets [Line Items]
Goodwill	736		736		736
Trademarks, Trade Names [Member]
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived non-amortizable intangible assets	$ 400		$ 400		$ 400