The following table reflects the calculation of basic and diluted earnings per share (in thousands, except per share amounts):

 

		Quarter Ended								Nine Months Ended
		March 31,								March 31,
		2018				2017				2018				2017
Earnings per share – basic:
Net income		$	19,738			$	22,167			$	84,449			$	48,476
Income allocated to participating securities			(18	)			(20	)			(70	)			(42	)
Income available to common shareholders		$	19,720			$	22,147			$	84,379			$	48,434
Weighted-average shares outstanding – basic			37,503				37,320				37,450				37,303
Earnings per share – basic		$	0.53			$	0.59			$	2.25			$	1.30
Earnings per share – diluted:
Net income		$	19,738			$	22,167			$	84,449			$	48,476
Income allocated to participating securities			(18	)			(20	)			(70	)			(42	)
Income available to common shareholders		$	19,720			$	22,147			$	84,379			$	48,434
Weighted-average shares outstanding – basic			37,503				37,320				37,450				37,303
Dilutive effect of stock options and restricted stock units			639				174				483				183
Weighted-average common shares outstanding – diluted			38,142				37,494				37,933				37,486
Earnings per share – diluted		$	0.52			$	0.59			$	2.22			$	1.29

 

The dilutive effect of stock options and restricted stock units in the above table excludes all options for which the aggregate exercise proceeds exceeded the average market price for the period. The number of potentially dilutive option shares excluded from the calculation was million and million for the quarter ended and respectively and million and million for the months ended and respectively.