Segment Information (Details) $ in Thousands	4 Months Ended	9 Months Ended
Oct. 07, 2018 USD ($)	Oct. 08, 2017 USD ($)	Oct. 07, 2018 USD ($) segment	Oct. 08, 2017 USD ($)	Dec. 31, 2017 USD ($)
Segment Information
Number of operating segments (in segments) \| segment			2
Net sales	$ 1,497,669	$ 1,457,353	$ 3,639,390	$ 3,502,657
Cost of sales, distribution and store occupancy	1,265,220	1,243,490	3,090,962	2,993,413
Operating and administrative expenses	209,890	195,285	507,892	474,021
Income from operations	22,559	18,578	40,536	35,223
Total assets	1,828,559		1,828,559		$ 1,809,937
Investment in joint venture	16,746		16,746		15,380
Goodwill	385,918		385,918		$ 385,918
Capital expenditures	42,312	48,101	107,737	117,583
Depreciation and amortization	29,829	31,051	76,246	75,048
Smart & Final \| Consolidating Reportable segments
Segment Information
Net sales	1,144,090	1,115,234	2,807,739	2,716,337
Cost of sales, distribution and store occupancy	961,575	948,476	2,374,313	2,311,878
Operating and administrative expenses	159,742	145,410	385,179	357,112
Income from operations	22,773	21,348	48,247	47,347
Total assets	1,695,259		1,695,259
Intercompany receivable (payable)	289,544		289,544
Goodwill	181,338		181,338
Capital expenditures	27,747	38,699	76,783	93,503
Depreciation and amortization	25,899	26,962	66,403	64,982
Smart Foodservice \| Consolidating Reportable segments
Segment Information
Net sales	353,579	342,119	831,651	786,320
Cost of sales, distribution and store occupancy	300,999	292,502	710,016	675,007
Operating and administrative expenses	25,660	23,972	62,329	57,579
Income from operations	26,920	25,645	59,306	53,734
Total assets	458,194		458,194
Intercompany receivable (payable)	76,258		76,258
Goodwill	204,580		204,580
Capital expenditures	6,759	5,201	14,990	11,575
Depreciation and amortization	1,682	1,698	4,480	3,975
Corporate / Other \| Consolidating Reportable segments
Segment Information
Cost of sales, distribution and store occupancy	2,646	2,512	6,633	6,528
Operating and administrative expenses	24,488	25,903	60,384	59,330
Income from operations	(27,134)	(28,415)	(67,017)	(65,858)
Total assets	(324,894)		(324,894)
Intercompany receivable (payable)	(365,802)		(365,802)
Investment in joint venture	16,746		16,746
Capital expenditures	7,806	4,201	15,964	12,505
Depreciation and amortization	$ 2,248	$ 2,391	$ 5,363	$ 6,091

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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