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Acquisitions (Narrative) (Details) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
May 19, 2019 warehouse store | Mar. 31, 2019 store | Mar. 30, 2019 USD ($) property store | Mar. 31, 2018 USD ($) store
Business Acquisition [Line Items] |  |  |  |
Store acquisitions related to acquisition growth strategy | property |  |  | 5 |
Costs related to completed acquisitions | $ |  |  | $ 600 | $ 500
Sales for acquired entities | $ |  |  | 49,100 | 14,800
Net income (loss) for acquired entities | $ |  |  | (500) | 100
Change in estimates, inventories | $ |  |  | (100) |
Change in estimates, property, plant and equipment | $ |  |  | (200) |
Change in estimates, intangible assets | $ |  |  | (200) |
Adjustments to goodwill related to purchase accounting | $ |  |  | $ 487 | $ 1,331
Maximum [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Store acquisitions related to greenfield store growth strategy | property |  |  | 4 |
Minimum [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Store acquisitions related to greenfield store growth strategy | property |  |  | 1 |
Certified Tire And Service Centers, Inc. [Member] | Subsequent Event [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date | May 19, 2019 |  |  |
Number of stores acquired | 40 |  |  |
Number of distribution center | warehouse | 1 |  |  |
Allied Discount Tire And Brake, Inc [Member] | Subsequent Event [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  | Mar. 31, 2019 |  |
Number of stores acquired |  | 12 |  |
Appalachian Tire Products, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Mar. 04, 2018 |
Number of stores acquired |  |  |  | 7
Mattoon Muffler, Inc. and Charleston Muffler, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Mar. 04, 2018 |
Number of stores acquired |  |  |  | 2
City Tire Co., Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Mar. 04, 2018 |
Number of stores acquired |  |  |  | 1
Devenir Enterprises, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Mar. 01, 2018 |
Number of stores acquired |  |  |  | 1
Valley Tire Co., Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jan. 14, 2018 |
Number of stores acquired |  |  |  | 3
R.A. Johnson, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jan. 13, 2019 |
Number of stores acquired |  |  | 13 |
Number of stores yet to open |  |  | 1 |
Colony Tire Corporation [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Dec. 09, 2018 |
Number of stores acquired |  |  | 2 |
Jeff Pohlman Tire & Auto Service, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Nov. 04, 2018 |
Number of stores acquired |  |  | 5 |
Quality Tire and Auto, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Oct. 14, 2018 |
Number of stores acquired |  |  | 1 |
Walton’s Automotive, LLC. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Sep. 23, 2018 |
Number of stores acquired |  |  | 1 |
C&R Auto Service, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Sep. 16, 2018 |
Number of stores acquired |  |  | 1 |
Steele-Guiltner, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Sep. 09, 2018 |
Number of stores acquired |  |  | 4 |
Mayfair Tire & Service Center, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jul. 15, 2018 |
Number of stores acquired |  |  | 1 |
Sawyer Tire, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jul. 08, 2018 |
Number of stores acquired |  |  | 8 |
Free Service Tire Company, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | May 13, 2018 |
Number of stores acquired |  |  | 12 |
Number of retread centers acquired |  |  | 1 |
Number of wholesale centers acquired |  |  | 4 |
Liberty Auto Group, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Apr. 01, 2018 |
Number of stores acquired |  |  | 4 |
MLR, Incorporated [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Dec. 17, 2017 |
Number of stores acquired |  |  |  | 1
TriGar Tire & Auto Service Center, LLC. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Dec. 10, 2017 |
Number of stores acquired |  |  |  | 2
TriGar Tire & Auto Service Center, LLC., Operated By Monro [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of stores acquired |  |  |  | 1
TriGar Tire & Auto Service Center, LLC., Operated By Mr. Tire [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Number of stores acquired |  |  |  | 1
Auto MD, LLC. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Aug. 13, 2017 |
Number of stores acquired |  |  |  | 8
UVR, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jul. 30, 2017 |
Number of stores acquired, both operating and not opened |  |  |  | 13
Number of stores acquired |  |  |  | 12
Number of stores never opened |  |  |  | 1
Norman Young Tires, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jul. 09, 2017 |
Number of stores acquired |  |  |  | 1
D&S Pulaski, LLC. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jun. 25, 2017 |
Number of stores acquired |  |  |  | 1
J & R Diversified, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jun. 11, 2017 |
Number of stores acquired |  |  |  | 2
Michael N. McGroarty, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jun. 11, 2017 |
Number of stores acquired |  |  |  | 1
Tires Plus LLC. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Jun. 02, 2017 |
Number of stores acquired |  |  |  | 1
Bob Sumerel Tire Co., Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | May 21, 2017 |
Number of stores acquired |  |  |  | 1
Collier Automotive Group, Inc. [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Acquisition date |  |  | Apr. 23, 2017 |
Number of stores acquired |  |  |  | 1
Fiscal 2018 Acquisitions [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Total consideration transferred | $ |  |  |  | $ 22,624
Fiscal 2019 Acquisitions [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Total consideration transferred | $ |  |  | $ 61,617 |

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