Description of Business and Summary of Significant Accounting Policies Description of Business and Summary of Significant Accounting Policies - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets [Line Items]
Total intangibles	$ 121,575	$ 115,791
Accumulated amortization	74,620	64,343
Finite-lived intangibles, net	46,955	51,448
Customer/territorial relationships
Finite-Lived Intangible Assets [Line Items]
Total intangibles	83,012	80,070
Developed technology
Finite-Lived Intangible Assets [Line Items]
Total intangibles	19,979	19,176
Dealer networks
Finite-Lived Intangible Assets [Line Items]
Total intangibles	6,726	6,315
Airport Contracts
Finite-Lived Intangible Assets [Line Items]
Total intangibles	4,635	4,752
Store Networks
Finite-Lived Intangible Assets [Line Items]
Total intangibles	2,500	821
Trademarks
Finite-Lived Intangible Assets [Line Items]
Total intangibles	2,689	2,677
Brand
Finite-Lived Intangible Assets [Line Items]
Total intangibles	918	864
Non-compete agreements
Finite-Lived Intangible Assets [Line Items]
Total intangibles	764	764
Backlog
Finite-Lived Intangible Assets [Line Items]
Total intangibles	140	140
Database
Finite-Lived Intangible Assets [Line Items]
Total intangibles	212	212
Customer/territorial relationships
Finite-Lived Intangible Assets [Line Items]
Customer/territorial relationships	$ 42,055	$ 42,055