Note 10 - Income Taxes (Detail) - Deferred tax assets and deferred tax liabilities (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Mar. 25, 2012
Deferred tax assets
Accrued expenses	$ 166	$ 183
Allowance for doubtful accounts	49	44
Deferred revenue	510	520
Deferred stock compensation	646	830
Excess of straight line over actual rent	316	340
Other	127	20
Total gross deferred tax assets	1,814	1,937
Deferred tax liabilities
Deductible prepaid expense	223	191
Unrealized gain on marketable securities	202	307
Depreciation expense	321	12
Other	243	211
Total gross deferred tax liabilities	989	721
Net deferred tax asset	825	1,216
Less current portion	(345)	(338)
Long-term portion	$ 480	$ 878