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Note 7 - Restructuring (Details) - Summary of Restructuring Liabilities (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 57,000us-gaap_RestructuringCharges	$ 197,000us-gaap_RestructuringCharges	$ 1,889,000us-gaap_RestructuringCharges
Balances,	0us-gaap_RestructuringReserve
October 2012 Plan [Member] \| Employee Severance [Member]
Restructuring Cost and Reserve [Line Items]
Balances,	13,000	885,000
Restructuring charges	57,000	249,000	1,733,000
Payments	(70,000)	(1,121,000)	(848,000)
Balances,		13,000	885,000
October 2012 Plan [Member] \| Professional and Other Fees [Member]
Restructuring Cost and Reserve [Line Items]
Balances,		11,000
Restructuring charges		51,000	73,000
Payments		(62,000)	(62,000)
Balances,			11,000
October 2012 Plan [Member]
Restructuring Cost and Reserve [Line Items]
Balances,	13,000	896,000
Restructuring charges	57,000	300,000	1,806,000
Payments	(70,000)	(1,183,000)	(910,000)
Balances,		$ 13,000	$ 896,000

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

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