Share Capital (Tables)

6 Months Ended

Jun. 30, 2019

Equity [Abstract]

Changes in Number of Shares of Class A Stock Outstanding

The following table reflects changes in the number of shares of Class A Stock outstanding for the periods indicated:

	For the Three Months Ended June 30,			For the Six Months Ended June 30,
	2019		2018	2019		2018
Class A Stock outstanding, beginning of period	12,923,517		13,141,103	12,941,809		13,139,203
Issued pursuant to share-based compensation plans	—		15,250	61,091		17,150
Repurchased and canceled pursuant to the stock buy-back	(167,209	)	—	(246,592	)	—
Class A Stock outstanding, end of period	12,756,308		13,156,353	12,756,308		13,156,353