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Basis of Presentation and Summary Accounting Policies - Additional Information (Detail) - USD ($)
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2016
Dec. 31, 2015
Schedule Of Significant Accounting Policies [Line Items]            
Percentage of total annual net sales in the third and fourth quarters         61.00% 59.00%
Shipping and handling revenue $ 431,000 $ 497,000 $ 992,000 $ 1,033,000    
Restructuring expenses 254,000 $ 1,060,000 254,000 $ 1,701,000    
Retained earnings 56,210,000   56,210,000   $ 60,981,000  
Employee severance            
Schedule Of Significant Accounting Policies [Line Items]            
Additional restructuring cost expected to incur 700,000   700,000      
Accounting Standards Update 2016-09            
Schedule Of Significant Accounting Policies [Line Items]            
Retained earnings         $ (46,000)  
Receivables purchase agreement            
Schedule Of Significant Accounting Policies [Line Items]            
Sale of Receivable 17,600,000   39,200,000      
Receivables purchase agreement | Selling, general and administrative expenses            
Schedule Of Significant Accounting Policies [Line Items]            
Charge related to sale of receivables $ 63,000   $ 130,000