Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jan. 31, 2015	Jan. 31, 2014	Jul. 31, 2014	Jul. 31, 2013
Business Combination, Contingent Consideration Arrangements, Description	42% of the amount by which EBITDA for the resort operations, as calculated under the lease, exceed approximately $35 million, with such threshold amount increased by an inflation linked index and a 10% adjustment for any capital improvements or investments made under the lease by the Company (the "Contingent Consideration").
Contingent Consideration, Key Assumptions for Valuation	The fair value of Contingent Consideration includes the resort operations of Park City in the calculation of EBITDA on which participating contingent payments are made, and increases the EBITDA threshold before which participating contingent payments are made equal to 10% of the purchase price paid by the Company, plus future capital expenditures. The Company estimated the fair value of the Contingent Consideration payments using an option pricing valuation model. Key assumptions included a discount rate of 11.5%, volatility of 20.0%, and credit risk of 3.0%. The model also incorporates assumptions for EBITDA and capital expenditures which are unobservable inputs and thus are considered Level 3 inputs.
Contingent Consideration, Fair Value Disclosure	$ 6,000	$ 9,100	$ 10,500	$ 9,100
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability	4,500	0
Fair Value, Inputs, Level 3 [Member]
Contingent Consideration, Fair Value Disclosure	6,000	9,100	10,500
Money Market [Member]
Cash equivalents measured at fair value	7,578	9,023	9,022
Money Market [Member] | Level 1 [Member]
Cash equivalents measured at fair value	7,578	9,023	9,022
Commercial Paper [Member]
Cash equivalents measured at fair value	2,401	630	630
Commercial Paper [Member] | Level 2 [Member]
Cash equivalents measured at fair value	2,401	630	630
Certificates of Deposit [Member]
Cash equivalents measured at fair value	2,900	630	880
Certificates of Deposit [Member] | Level 2 [Member]
Cash equivalents measured at fair value	$ 2,900	$ 630	$ 880