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Asset Held For Sale - Additional Information (Detail)
1 Months Ended 3 Months Ended
May 31, 2017
USD ($)
Apr. 29, 2017
USD ($)
Gallery
Jan. 28, 2017
USD ($)
Long Lived Assets Held For Sale [Line Items]      
Asset held for sale   $ 8,179,000 $ 4,900,000
Sale price of aircraft   5,200,000  
Costs incurred in disposal of asset   $ 300,000  
Number of retail galleries held for sale | Gallery   1  
Impairment charge due to reclassification   $ 0  
Sale of building and land   $ 4,900,000  
Subsequent Event [Member]      
Long Lived Assets Held For Sale [Line Items]      
Sale of building and land $ 10,200,000