Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2018

Earnings Per Share [Abstract]

Reconciliation of Basic and Diluted Weighted-Average Shares Outstanding

A reconciliation of basic and diluted weighted-average shares outstanding is as follows:

	Three Months Ended March 31,
	2018	2017
Basic weighted average shares outstanding	114,179,084	117,770,474
Weighted average dilutive options outstanding	2,570,418	2,659,242
Diluted weighted average shares outstanding	116,749,502	120,429,716
Antidilutive shares	535,143	625,855