Note 6 - Acquisitions (Tables)

6 Months Ended

Oct. 31, 2014

Notes Tables

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

Assets acquired:
Inventories	$	2,471
Property and equipment		25,250
Total assets		27,721
Liabilities assumed:
Accrued expenses		58
Total liabilities		27,663
Net tangible assets acquired, net of cash
Goodwill and other intangible assets		6,625
Total consideration paid, net of cash acquired	$	34,288

Business Acquisition, Pro Forma Information [Table Text Block]

	Six months ended October 31,
	2014		2013
Total revenues	$	4,447,737		4,187,458
Net earnings (1)		100,060		94,364
Earnings per common share:
Basic	$	2.59		2.46
Diluted	$	2.56		2.43