Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating Revenues
Operating Revenues	$ 809,436	$ 716,982	$ 2,323,043	$ 2,102,110
Operating Costs and Expenses
Selling, general and administrative	215,891	166,207	587,181	506,199
Depreciation of property, plant and equipment	18,741	18,481	51,886	58,098
Amortization of intangible assets	15,981	14,150	43,807	42,642
Impairment of goodwill and other long-lived assets	26,753	1,916	31,568	29,828
Total Operating Costs and Expenses	826,043	676,738	2,268,215	2,047,904
(Loss) Income from Operations	(16,607)	40,244	54,828	54,206
Equity in earnings of affiliates, net	12,964	4,092	28,168	3,727
Interest income	(79)	890	2,687	2,995
Interest expense	(9,343)	(7,247)	(25,144)	(22,302)
Non-operating pension and postretirement benefit income, net	27,561	10,489	81,564	41,028
Gain (loss) on marketable equity securities, net	14,069	59,364	176,981	(1,139)
Other income, net	5,218	222	27,660	11,010
Income Before Income Taxes	33,783	108,054	346,744	89,525
(Benefit from) Provision for Income Taxes	(5,900)	30,000	78,500	26,500
Net Income	39,683	78,054	268,244	63,025
Net (Income) Loss Attributable to Noncontrolling Interests	(97)	(439)	(850)	199
Net Income Attributable to Graham Holdings Company Common Stockholders	$ 39,586	$ 77,615	$ 267,394	$ 63,224
Per Share Information Attributable to Graham Holdings Company Common Stockholders
Basic net income per common share (in USD per share)	$ 7.93	$ 15.25	$ 53.49	$ 12.15
Basic average number of common shares outstanding (in shares)	4,961	5,060	4,966	5,176
Diluted net income per common share (in USD per share)	$ 7.90	$ 15.22	$ 53.33	$ 12.11
Diluted average number of common shares outstanding (in shares)	4,977	5,072	4,980	5,192
Services [Member]
Operating Revenues
Operating Revenues	$ 515,280	$ 492,399	$ 1,509,986	$ 1,492,631
Operating Costs and Expenses
Cost of services and goods	307,138	298,250	906,555	929,877
Goods [Member]
Operating Revenues
Operating Revenues	294,156	224,583	813,057	609,479
Operating Costs and Expenses
Cost of services and goods	$ 241,539	$ 177,734	$ 647,218	$ 481,260

The aggregate total costs related to selling a firm's product and services, as well as all other general and administrative expenses. Direct selling expenses (for example credit, warranty, and advertising) are expenses that can be directly linked to the sale of specific products. Indirect selling expenses are expenses that cannot be directly linked to the sale of specific products, for example telephone expenses, Internet, and postal charges. General and administrative expenses include salaries of non-sales personnel, rent, utilities, communication, etc. Also includes expenses such as bad debt expense, and gain (loss) on disposition of assets.

No definition available.