Pure Cycle Corporation Annual report pursuant to Section 13 and 15(d)

Note 3 - Fair Value Measurements (Detail) - Changes in the Tap Participation Fee (USD $)	12 Months Ended
	Aug. 31, 2012
Gross Estimated Tap Participation Fee Liability [Member]
Balance at August 31, 2011	$ 113,147,700
Total gains and losses (realized and unrealized):
Purchases, sales, issuances, payments, and settlements	(189,700)
Balance at August 31, 2012	112,958,000
Tap Participation Fee Report Liability [Member]
Balance at August 31, 2011	64,988,300
Total gains and losses (realized and unrealized):
Imputed interest recorded as "Other Expense"	3,470,500
Purchases, sales, issuances, payments, and settlements	(189,700)
Balance at August 31, 2012	68,269,100
Discount To Be Imputed As Interest Expense In Future Periods [Member]
Balance at August 31, 2011	48,159,400
Total gains and losses (realized and unrealized):
Imputed interest recorded as "Other Expense"	(3,470,500)
Balance at August 31, 2012	$ 44,688,900