Note 3 - Summary of Compensation Related Charges (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2015 USD ($)
Emergency Response Vehicles [Member] | Inventory Impairment [Member]
Inventory impairment	$ 290
Emergency Response Vehicles [Member] | Manufacturing Process Reengineering [Member]
General and Administrative
Manufacturing process reengineering	1,965
Emergency Response Vehicles [Member] | Production Relocation Costs [Member]
Inventory impairment	174
Emergency Response Vehicles [Member]
Inventory impairment	464
General and Administrative
Total restructuring	2,429
Inventory impairment	464
Manufacturing process reengineering	$ 1,965