Note 6 - Credit Facility (Details) (USD $)	Jun. 29, 2013	Dec. 31, 2012	Jun. 30, 2012	Dec. 31, 2011
Note 6 - Credit Facility (Details) [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 50,000,000
Line of Credit Facility, Current Borrowing Capacity	7,200,000
Line of Credit Facility, Amount Outstanding	0	0
Line of Credit Facility, Remaining Borrowing Capacity	4,300,000
Cash and Cash Equivalents, at Carrying Value	2,546,000	12,500,000	10,336,000	25,801,000
Minimum Borrowing Availability Required by Amendment	5,000,000
Fixed Charge Coverage Ratio	1.0 to 1.0
Had The Amendment Been In Effect At June 29, 2013 [Member]
Note 6 - Credit Facility (Details) [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 2,200,000