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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 9 Months Ended
Jan. 01, 2019
Jun. 30, 2019
Mar. 31, 2019
Jun. 30, 2019
Sep. 30, 2019
Summary Of Significant Accounting Policy [Line Items]          
Life insurance proceeds received         $ 1,000
Operating lease, right-of-use asset $ 10,322       18,529
Operating lease, right-of-use liability 10,322       $ 18,722
ASU 2018-02 [Member]          
Summary Of Significant Accounting Policy [Line Items]          
Reclassification of tax effects related to adoption ASU $ 400        
Errors in Operating Activity [Member]          
Summary Of Significant Accounting Policy [Line Items]          
Amount of revision     $ 1,000    
Out-of-Period Adjustment [Member]          
Summary Of Significant Accounting Policy [Line Items]          
Increase (decrease) in cost of goods sold   $ 800   $ (200)  
Increase (decrease) in excess and obsolete inventory reserve   $ 800   $ (200)