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Associate Retirement Plans - Schedule of Amounts Recognized in Accumulated Other Comprehensive Income (Detail) $ in Thousands	12 Months Ended
	Jan. 02, 2016 USD ($)
SpartanNash Company Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	$ 111
Spartan Stores Medical Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Prior service credit	(158)
Net actuarial loss	$ 42

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