Revenue Costs to Obtain Contracts with Customers (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2019	Jan. 31, 2018
Mountain Revenue Net	$ 776,073	$ 670,902	$ 921,079	$ 819,027
Lodging Revenue Net	73,249	63,539	148,149	135,628
Resort net revenue	849,322	734,441	1,069,228	954,655
Revenues	849,578	734,575	1,069,582	955,425
Real Estate Revenue	256	134	354	770
Capitalized Contract Cost, Net	5,200		5,200
Lift Tickets [Member]
Mountain Revenue Net	447,558	381,912	472,243	407,380
Ski School [Member]
Mountain Revenue Net	92,244	80,116	96,516	84,554
Dining [Member]
Mountain Revenue Net	65,409	53,910	83,701	72,212
Lodging Revenue Net	10,189	7,869	26,318	23,749
Retail/Rental [Member]
Mountain Revenue Net	128,436	115,446	171,778	160,853
Other Mountain Revenue [Member]
Mountain Revenue Net	42,426	39,518	96,841	94,028
Owned Hotel Revenue [Member]
Lodging Revenue Net	11,548	11,353	31,147	30,988
Managed condominium rooms [Member]
Lodging Revenue Net	28,046	23,358	39,164	33,529
Transportation [Member]
Lodging Revenue Net	7,722	7,460	10,196	10,013
Golf [Member]
Lodging Revenue Net	0	0	9,459	8,767
Other Lodging Revenue [Member]
Lodging Revenue Net	12,120	9,914	24,588	21,688
Lodging revenue (excluding payroll cost reimbursements) [Member]
Lodging Revenue Net	69,625	59,954	140,872	128,734
Payroll cost reimbursements [Member]
Lodging Revenue Net	$ 3,624	$ 3,585	$ 7,277	$ 6,894