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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, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Dec. 31, 2013
Schedule Of Significant Accounting Policies [Line Items]            
Percentage of total annual net sales in the third and fourth quarters         60.00% 61.00%
Shipping and handling revenue $ 290,000 $ 312,000 $ 699,000 $ 682,000    
Derivative fair value adjustment gain (loss), net of tax 17,000 (43,000) (37,000) (34,000)    
Foreign exchange contract | Selling, general and administrative expenses            
Schedule Of Significant Accounting Policies [Line Items]            
Change in fair value recorded in earnings 122,000   122,000      
Other Long Term Assets | Foreign exchange contract            
Schedule Of Significant Accounting Policies [Line Items]            
Notional amount 12,000,000   12,000,000      
Fair value of derivative instruments, Asset 122,000   122,000      
Fair Value, Observable inputs, Level 2 | Accrued Expenses and Other Long-Term Liabilities            
Schedule Of Significant Accounting Policies [Line Items]            
Fair value of derivative instruments, liability 94,000   $ 94,000   $ 32,000  
Interest Rate Swap Agreements            
Schedule Of Significant Accounting Policies [Line Items]            
Commencement date     2013-03      
Expiry date     Jun. 30, 2018      
Derivative fair value adjustment gain (loss), net of tax 17,000 $ (43,000) $ (37,000) $ (34,000)    
Interest Rate Swap Agreements | Cash Flow Hedging            
Schedule Of Significant Accounting Policies [Line Items]            
Notional amount $ 22,800,000   $ 22,800,000