Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2016	Jan. 31, 2015	Jan. 31, 2016	Jan. 31, 2015
Service revenues and vehicle sales:
Service revenues	$ 260,417	$ 238,508	$ 511,384	$ 485,128
Vehicle sales	39,289	37,750	77,160	81,516
Total service revenues and vehicle sales	299,706	276,258	588,544	566,644
Operating expenses:
Yard operations	140,965	129,273	276,874	260,278
Cost of vehicle sales	34,127	32,118	66,195	69,191
General and administrative	32,529	34,399	67,144	74,306
Total operating expenses	207,621	195,790	410,213	403,775
Operating income	92,085	80,468	178,331	162,869
Other (expense) income:
Interest expense	(5,570)	(4,688)	(11,294)	(6,598)
Interest income	602	183	813	322
Other income, net	4,435	4,141	5,462	5,734
Total other expenses	(533)	(364)	(5,019)	(542)
Income before income taxes	91,552	80,104	173,312	162,327
Income taxes	32,589	27,911	61,936	57,519
Net income	$ 58,963	$ 52,193	$ 111,376	$ 104,808
Basic net income per common share	$ 0.50	$ 0.41	$ 0.94	$ 0.83
Weighted average common shares outstanding	117,306	126,300	118,731	126,258
Diluted net income per common share	$ 0.48	$ 0.40	$ 0.90	$ 0.80
Diluted weighted average common shares outstanding	122,908	131,872	124,240	131,694