Note 14 - Valuation and Qualifying Accounts (Details) (Valuation Allowance of Deferred Tax Assets [Member], USD $)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2014	Dec. 31, 2013	Jan. 02, 2012	Dec. 31, 2011
Note 14 - Valuation and Qualifying Accounts (Details) [Line Items]
Valuation Allowances and Reserves, Balance	$ 21,907,000	[1]	$ 26,046,000	$ 22,762,000		$ 20,551,000	[1]
Valuation Allowances and Reserves, Deductions	417,000	[1]	496,000	2,582,000
Restatement Adjustment [Member]
Note 14 - Valuation and Qualifying Accounts (Details) [Line Items]
Valuation Allowances and Reserves, Balance	(999,000)				(723,000)
Valuation Allowances and Reserves, Deductions	$ 276,000

[1] The Company revised the deferred tax assets valuation allowance balance for calendar year 2012 as a result of revisions to its deferred tax assets relating to stock-based compensation and the resulting valuation allowance for them. These changes had no impact to the Company's balance sheets, statement of operations, earnings per share, statement of cash flows, or statement of equity for any period presented. The beginning balance for 2012 was reduced by $723,000, and the deductions for the year were increased by $276,000, which resulted in a net change in the ending balance for the year by $999,000.