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Income Taxes (Deferred Tax Assets and Liabilities) (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Jun. 30, 2011
Income Tax Expense (Benefit) [Abstract]    
Allowance for accounts receivable $ 6,456 $ 2,857
Inventories 7,336 11,310
Nondeductible accrued expenses 512 2,204
Net operating loss carryforwards 2,931 452
Tax credits 583 241
Deferred compensation 4,331 4,822
Stock compensation 5,631 2,868
Timing of depreciation and other deductions for building and equipment 98 0
Total deferred tax assets 27,878 24,754
Valuation allowance (541) (517)
Total deferred tax assets 27,337 24,237
Timing of amortization deduction from intangible assets (5,840) (2,717)
Timing of depreciation and other deductions for building and equipment 0 (238)
Total deferred tax liabilities (5,840) (2,955)
Net deferred tax assets $ 21,497 $ 21,282