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Amount Borrowed to Finance Business Acquisition

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Interest Rate on Advance to Minority Shareholder

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The amount borrowed to finance the purchase of specific vehicle inventories.

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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Percentage of voting equity interests acquired at the acquisition date in the business combination.

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The amount of goodwill arising from a business combination that is expected to be deductible for tax purposes.

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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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This element represents the amount of earnings or loss of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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This element represents the amount of revenue of the acquiree since the acquisition date included in the consolidated income statement for the reporting period.

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Fixed interest rate related to the interest rate derivative.

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The number of businesses acquired by the entity during the period.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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Acquisitions and Dispositions of Businesses (Acquisitions) (Narrative) (Details) $ in Thousands		1 Months Ended		3 Months Ended	9 Months Ended		12 Months Ended
	Jan. 31, 2019 USD ($) business	Sep. 30, 2019 USD ($) business	Jul. 31, 2019 business Restaurants	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($) business	Sep. 30, 2018 USD ($)	Dec. 31, 2018 USD ($) business	Aug. 31, 2018	Jul. 31, 2018	Jul. 12, 2018	May 31, 2018
Business Acquisition [Line Items]
Number of businesses acquired \| business					7		8
Acquisition purchase price					$ 191,600		$ 121,100
Floor plan payables		$ 25,800		$ 25,800	25,800
Purchase Price Net of Cash					162,060	$ 111,451
Business Acquisition, Transaction Costs		2,300		2,300	2,300	$ 1,200
Goodwill expected to be deductible for income tax purposes		49,000		49,000	49,000		$ 32,300
Revenues of acquired companies since acquisition date				96,200	199,600
Operating loss of acquired companies since acquisition date				2,000	500
Automotive [Member]
Business Acquisition [Line Items]
Floor plan payables		$ 40,900		$ 40,900	$ 40,900
Education [Member]
Business Acquisition [Line Items]
Number of businesses acquired \| business					1		5
Education [Member] \| Professional (U.S.) [Member] \| College for Financial Planning [Member]
Business Acquisition [Line Items]
Percentage of interest acquired										100.00%
Education [Member] \| Professional (U.S.) [Member] \| Professional Publications, Inc. [Member]
Business Acquisition [Line Items]
Percentage of interest acquired											100.00%
Healthcare [Member]
Business Acquisition [Line Items]
Number of businesses acquired \| business			1		2		1
Manufacturing [Member]
Business Acquisition [Line Items]
Number of businesses acquired \| business		1			1		1
Other Businesses [Member]
Business Acquisition [Line Items]
Number of businesses acquired \| business					3
Other Businesses [Member] \| Clyde's Restaurant Group [Member]
Business Acquisition [Line Items]
Number of Restaurants \| Restaurants			13
Other Businesses [Member] \| Furnlite Inc [Member] \| Dekko [Member]
Business Acquisition [Line Items]
Percentage of interest acquired									100.00%
Other Businesses [Member] \| Auto dealerships [Member]
Business Acquisition [Line Items]
Percentage of interest acquired	90.00%
Advances to Affiliate	$ 3,500
Interest Rate on Advance to Minority Shareholder	6.00%
Number of businesses acquired \| business	2
Amount Borrowed to Finance Business Acquisition	$ 30,000
Derivative, Fixed Interest Rate	4.70%
Other Businesses [Member] \| Marketplace Strategy [Member] \| SocialCode [Member]
Business Acquisition [Line Items]
Percentage of interest acquired								100.00%
SocialCode [Member]
Business Acquisition [Line Items]
Number of businesses acquired \| business							1