Note 5 - Transactions Between the Company and Affiliates (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Field Merchandiser Services SBS [Member]
Services provided by affiliates	$ 4,905	$ 5,605	$ 15,699	$ 16,658
Field Management Services [Member]
Services provided by affiliates	1,080	1,056	3,334	3,361
Field Merchandiser Services NRS [Member]
Services provided by affiliates	471	546	1,038	1,905
Office And Vehicle Rental MPT [Member]
Services provided by affiliates	29	16	70	49
Vehicle Rental MCPT [Member]
Services provided by affiliates	548	156	1,108	457
Office And Vehicle Rental MHT [Member]
Services provided by affiliates	$ 30	30	90	90
Field Management Services NDS Tanitim [Member]
Services provided by affiliates		11	15	31
Field Merchandiser Services NDS Reklam [Member]
Services provided by affiliates		$ 241	117	$ 855
Consulting and Administrative Services (CON) [Member]
Services provided by affiliates	$ 89		283
Services provided by affiliates	$ 7,152	$ 7,661	$ 21,754	$ 23,406