Share-Based Incentives (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Activity summary of share-based incentives

The following table provides an activity summary of the Company's restricted and unrestricted Class B shares outstanding:

	Restricted Class B shares	Unrestricted Class B shares	Total Class B shares
Outstanding December 31, 2018	161,810	183,834	345,644
Granted	117,929	—	117,929
Purchased	—	18,875	18,875
Repurchased	(100,407)	(100,273)	(200,680)
Outstanding December 31, 2019	179,332	102,436	281,768
Granted	167,202	—	167,202
Purchased	—	38,838	38,838
Repurchased	(129,583)	(83,561)	(213,144)
Expiration of restricted period	(27,785)	27,785	—
Outstanding December 31, 2020	189,166	85,498	274,664