Share Capital (Tables)

9 Months Ended

Sep. 30, 2015

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 September 30,			For the Nine Months Ended September 30,
	2015		2014	2015		2014
Class A Stock outstanding, beginning of period	13,650,149		13,519,126	13,530,688		13,377,967
Issued pursuant to shared-based compensation plans	12,063		11,562	131,524		152,721
Repurchased and canceled pursuant to the stock buy-back	(328,844	)	—	(328,844	)	—
Class A Stock outstanding, end of period	13,333,368		13,530,688	13,333,368		13,530,688