Note 4 - Long-term Debt Obligations (Details Textual) - USD ($)	1 Months Ended	6 Months Ended
	Apr. 22, 2015	Aug. 01, 2015	Jul. 26, 2014
Term Loan Facility [Member] | General Electric Capital Corporation [Member]
Gains (Losses) on Extinguishment of Debt	$ (300,000)
The 2015 Credit Facility [Member] | Wells Fargo Bank and GACP Finance Co [Member] | Revolving Credit Facility [Member]
Line of Credit Facility, Maximum Borrowing Capacity	100,000,000
Line of Credit Facility Maximum Amount by Which Facility May Be Increased	10,000,000
The 2015 Credit Facility [Member] | Wells Fargo Bank and GACP Finance Co [Member] | Letter of Credit [Member]
Line of Credit Facility, Maximum Borrowing Capacity	15,000,000
The 2015 Credit Facility [Member] | Wells Fargo Bank and GACP Finance Co [Member] | Commitments Under the Credit Facility [Member]
Letters of Credit Outstanding, Amount		$ 1,200,000
The 2015 Credit Facility [Member] | Wells Fargo Bank and GACP Finance Co [Member] | Standby Letters of Credit [Member]
Letters of Credit Outstanding, Amount		$ 5,400,000
The 2015 Credit Facility [Member] | Wells Fargo Bank and GACP Finance Co [Member] | Eurodollar [Member]
Debt Instrument, Basis Spread on Variable Rate		2.50%
The 2015 Credit Facility [Member] | Wells Fargo Bank and GACP Finance Co [Member] | Base Rate [Member]
Debt Instrument, Basis Spread on Variable Rate		1.50%
The 2015 Credit Facility [Member] | Wells Fargo Bank and GACP Finance Co [Member]
Debt Agreement, Maximum Borrowing Capacity	117,500,000
Long-term Debt	$ 17,500,000
Debt Agreement, Remaining Borrowing Capacity		$ 6,500,000
Revolving Credit and Term Loan Facilities Early Payment Threshold		$ 750,000
Floating Rate Series A Secured Notes Due 2017 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate		12.00%
Floating Rate Series A Secured Notes Due 2017 [Member]
Secured Debt		$ 8,200,000
Previous Lender [Member]
Letters of Credit Outstanding, Amount		700,000
Long-term Debt		$ 93,497,000	$ 90,226,000