Revenue Recognition (Details Narrative) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Deferred Revenue Arrangement [Line Items]
Amortization of deferred equipment revenue	$ 1,282,000	$ 1,273,000	$ 3,887,000	$ 3,401,000
Unbilled receivables, current	0		0		$ 0
Avis Budget Car Rental LLC [Member]
Deferred Revenue Arrangement [Line Items]
Revenue recognition, milestone method, revenue recognized	$ 0	$ 0	$ 255,000	$ 750,000
Revenue recognition, milestone method, description			Milestone payments are recognized as revenue upon achievement of the milestone only if the following conditions are met: (i) there is substantive uncertainty at the date of entering into the arrangement that the milestone would be achieved; (ii) the milestone is commensurate with either the vendor’s performance to achieve the milestone or the enhancement of the value of the delivered item by the vendor; (iii) the milestone relates solely to past performance; and (iv) be reasonable in relation to the effort expended to achieve the milestone.