Basic and diluted earnings per share (“EPS”) are calculated using the following weighted average share data (in thousands):

 

		Three months ended								Nine months ended
		March 31,								March 31,
		2019				2018				2019				2018
Weighted average shares outstanding for basic calculation			26,705				27,476				26,690				27,469
Dilutive effect of stock options and other share-based awards			46				216				59				256
Weighted average shares outstanding adjusted for dilution calculation			26,751				27,692				26,749				27,725

 

 

Dilutive potential common shares consist of stock options and unvested restricted stock awards. As of and stock options to purchase and common shares, respectively, were excluded from the diluted EPS calculations because their inclusion would have been anti-dilutive.

 

As of and the number of performance-based equity award grants excluded from the calculation of diluted EPS was and respectively Performance-based awards are excluded from the calculation of diluted EPS unless the performance criteria are probable of being achieved as of the balance sheet date.