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INCOME TAXES: Deferred Tax Assets (Details) - USD ($)
$ in Thousands
Nov. 30, 2015
Nov. 30, 2014
Deferred Tax Assets, Net, Classification [Abstract]    
Deferred tax assets- current $ 40,510 $ 34,310
Deferred tax assets- noncurrent 19,849 10,790
Deferred tax liabilities- current (1,667) (506)
Deferred tax liabilities- noncurrent (10,713) (12,867)
Total net deferred tax assets 47,979 31,727
Assets:    
Inventory reserves 9,829 9,206
Allowance for doubtful accounts and sales return reserves 8,040 9,174
Other reserves and accruals 21,340 11,609
State tax credits 3,798 2,878
Deferred and prepaid compensation 9,321 9,243
Net operating losses 17,580 14,435
Deferred Revenue 72 2,123
Share-based compensation expense 6,290 5,817
Unrealized losses on cash flow hedges 2,250 0
Others 3,473 1,914
Gross deferred tax assets 81,993 66,399
Valuation allowance (16,891) (7,101)
Total deferred tax assets 65,102 59,298
Liabilities:    
Depreciation and amortization (5,374) (5,750)
Intangible assets (11,131) (19,736)
Unrealized gains on forward contracts (356) 0
Unrealized gains on investments 0 (346)
Others (262) (1,739)
Total deferred tax liabilities (17,123) (27,571)
Total net deferred tax assets $ 47,979 $ 31,727