Share Capital (Tables)

6 Months Ended

Jun. 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 June 30,		For the Six Months Ended June 30,
	2015	2014	2015	2014
Class A Stock outstanding, beginning of period	13,634,831	13,516,626	13,530,688	13,377,967
Issued pursuant to shared-based compensation plans	15,318	2,500	119,461	141,159
Class A Stock outstanding, end of period	13,650,149	13,519,126	13,650,149	13,519,126