Income Taxes - Components of Net Deferred Tax Assets and Deferred Tax Liabilities (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 27, 2013	Dec. 28, 2012
Net current deferred tax asset (liability):
Deferred tax assets liabilities, gross current	$ 4,156	$ 2,921
Valuation allowance	(85)	(65)
Net current deferred tax asset	4,071	2,856
Net non-current deferred tax asset (liability):
Deferred tax assets liabilities, gross noncurrent	5,910	7,420
Valuation allowance	(569)	(786)
Net non-current deferred tax asset	5,341	6,634
Net deferred tax assets	9,412	9,490
Deferred Tax Current [Member]
Net current deferred tax asset (liability):
Inventory valuation and basis difference	2,601	2,236
Other accrued expenses	2,153	804
Undistributed earnings	(400)
State taxes	(198)	(119)
Net non-current deferred tax asset (liability):
Other accrued expenses	2,153	804
State taxes	(198)	(119)
Deferred Tax Assets Noncurrent [Member]
Net current deferred tax asset (liability):
Other accrued expenses	3,085	4,755
State taxes	(715)	(798)
Net non-current deferred tax asset (liability):
Deferred rent	20	5
Other accrued expenses	3,085	4,755
Depreciation	1,491	1,187
Net operating losses	2,029	2,271
State taxes	$ (715)	$ (798)