Common Stock - Sales, Repurchases, and Issuances of Company Capital Stock Narrative (Details) - USD ($)		3 Months Ended		6 Months Ended
	Jun. 17, 2021	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020	Apr. 23, 2018	Apr. 22, 2018
Class of Stock [Line Items]
Profit-sharing plan shares, net, value			$ 2,578,000		$ 4,428,000
Common Stock
Class of Stock [Line Items]
Stock repurchased during period (in shares)			198,853		385,568
Shares exercised (in shares)		2,393,937	1,486,795	3,657,058	2,184,628
Profit-sharing plan shares, net, value			$ 2,000		$ 4,000
Deferred Compensation, Share-based Payments | Deferred Profit Sharing
Class of Stock [Line Items]
Stock repurchased during period (in shares)					385,568
Profit-sharing plan shares, net, value					$ 4,428,000
Performance Based Restricted Stock Units (RSUs), 2016 | Equity Incentive Plan
Class of Stock [Line Items]
Shares repurchased by Company after exercise					$ 1,454,000
Shares repurchased by Company after exercise (in shares)					128,176
Class B Common Stock
Class of Stock [Line Items]
Amount authorized for purchase						$ 250,000,000	$ 250,000,000	$ 200,000,000
Stock repurchased during period (in shares)					3,769,346
Class B Common Stock | Private Placement
Class of Stock [Line Items]
Number of shares sold (in shares)					4,574,567
Sale of stock, consideration received					$ 58,349,000
Class B Common Stock | Private Placement, Direct Investor Investment
Class of Stock [Line Items]
Number of shares sold (in shares)					805,053
Sale of stock, consideration received					$ 12,462,000
Class B Common Stock | Seequent
Class of Stock [Line Items]
Number of shares sold (in shares)	3,141,342
Class B Common Stock | Deferred Compensation Arrangement with Individual, by Type of Compensation, Pension and Other Postretirement Benefits
Class of Stock [Line Items]
Share-based compensation tax withholding payment				$ 61,912,000	$ 1,830,000
Deferred compensation arrangement with individual, shares issued (in shares)				2,202,079	2,959,731
Deferred compensation arrangement with individual, shares issued, gross (in shares)				3,527,023	3,137,961
Shares withheld for tax withholding obligation (in shares)				1,324,944	178,230
Class B Common Stock | Common Stock
Class of Stock [Line Items]
Shares exercised, net of shares withheld (in shares)					2,184,628
Shares withheld for cost of options and tax withholding obligation					1,225,926
Class B Common Stock | Bonus Plan Incentive
Class of Stock [Line Items]
Shares exercised, net of shares withheld (in shares)				149,447
Shares withheld for cost of options and tax withholding obligation				99,742
Share-based compensation tax withholding payment				$ 4,716,000
Shares exercised (in shares)				249,189
Class B Common Stock | Stock Option
Class of Stock [Line Items]
Shares exercised, net of shares withheld (in shares)				3,657,058
Shares withheld for cost of options and tax withholding obligation				860,335
Share-based compensation tax withholding payment				$ 29,027,000	$ 3,064,000
Cash used to settle award				$ 4,324,000
Class B Common Stock | Stock Option | Common Stock
Class of Stock [Line Items]
Cash used to settle award					$ 2,237,000