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Income Taxes - Deferred Tax Assets and Liabilities (Detail) - USD ($)
May 01, 2016
May 03, 2015
deferred tax assets:    
accounts receivable $ 545,000 $ 444,000
inventories 2,660,000 2,251,000
compensation 5,311,000 4,497,000
liabilities and other 1,173,000 1,155,000
foreign income tax credits -U.S. 1,436,000  
alternative minimum tax credit -U.S. 1,320,000 1,320,000
property, plant and equipment [1] 326,000 447,000
loss carryforwards - U.S. 6,888,000 12,133,000
loss carryforwards - foreign 147,000 361,000
unrecognized tax benefits - U.S. (6,888,000) (10,349,000)
valuation allowances (590,000) (922,000)
total deferred tax assets 12,328,000 11,337,000
deferred tax liabilities:    
undistributed earnings on foreign subsidiaries (604,000) (1,733,000)
unrecognized tax benefits - U.S. (4,168,000)  
property, plant and equipment [2] (5,210,000) (4,022,000)
goodwill (1,325,000) (1,197,000)
other (185,000) (198,000)
total deferred tax liabilities (11,492,000) (7,150,000)
Net deferred tax asset $ 836,000 $ 4,187,000
[1] Pertains to the company's operations located in China.
[2] Pertains to the company's operations located in the U.S. and Canada.