Note 4 - Balance Sheet Detail (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Disclosure Text Block Supplement [Abstract]
Capital Leased Assets, Gross	$ 647,000	$ 577,000
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Accumulated Depreciation	253,000	98,000
Impairment of Intangible Assets (Excluding Goodwill)	650,000
Amortization of Intangible Assets	$ 773,000	$ 702,000	$ 1,200,000