Capital Stock

3 Months Ended

Mar. 31, 2017

Equity [Abstract]

Capital Stock

(11) CAPITAL STOCK

We have authorized capital stock of 485.0 million shares which includes 475.0 million shares of common stock and 10.0 million shares of preferred stock. We currently have no preferred stock issued or outstanding. The following is a schedule of changes in the number of common shares outstanding since the beginning of 2016:

	Three Months Ended March 31, 2017		Year Ended December 31, 2016
Beginning balance		247,144,356		169,316,460
MRD Merger		—		77,042,749
Restricted stock grants		66,078		490,609
Restricted stock units vested		302,383		266,541
PSU-TSR units settled		19,960		—
Shares retired		—		(739	)
Treasury shares issued		4,000		28,736
Ending balance		247,536,777		247,144,356