Note 14 - Foreign Revenues and Operations (Details Textual) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Assets	$ 22,704,000	$ 26,173,000
INDIA
Assets, Noncurrent	183,000	191,000
Foreign [Member]
Assets	648,000	501,000
Liabilities	$ 526,000	$ 435,000