Business Combinations (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Mar. 28, 2020	Mar. 30, 2019	Dec. 31, 2019
Investment in businesses	$ 2,740	$ 4,056
Liabilities assumed	380	245	$ 1,479
Debt issued for purchases of businesses	534	895	2,612
Payments to Acquire Businesses, Gross	1,826		8,529
Cash	0		3
Receivables	0		2,332
Operating supplies	23		84
Prepaid expense	0		27
Equipment	426		1,837
Deposits and other	0		96
Intangibles	935		4,067
Goodwill	$ 1,356	$ 1,232	$ 4,174
Tradenames [Member]
Finite-Lived Intangible Asset, Useful Life	6 years
Noncompete Agreements [Member]
Finite-Lived Intangible Asset, Useful Life	5 years

Fair value of acquired receivable from business combination, excluding certain loans and debt securities acquired in transfer.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liabilities incurred by the acquirer as part of consideration transferred in a business combination.

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Amount of currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of tangible personal property used to produce goods and services, including, but is not limited to, tools, dies and molds, computer and office equipment, acquired at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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The amount of inventory recognized as of the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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