Quarterly report pursuant to Section 13 or 15(d)

Accounting and Reporting Changes - Additional Information (Detail)

v3.19.3
Accounting and Reporting Changes - Additional Information (Detail) - USD ($)
$ in Thousands
Apr. 01, 2019
Sep. 30, 2019
Jun. 24, 2019
Mar. 31, 2019
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]        
Right-of-use assets   $ 312    
Lease liabilities   305    
Retained earnings   $ 92,979   $ 93,847
Topic 842 [Member]        
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]        
Right-of-use assets $ 676      
Lease liabilities 732      
Retained earnings 80      
Decrease in other current assets 47      
Decrease in deferred income tax liability $ 20      
Topic 842 [Member] | Held for Sale [Member]        
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]        
Right-of-use assets       500
Lease liabilities       $ 500
Topic 842 [Member] | Subsequently Sold [Member]        
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]        
Right-of-use assets     $ 500  
Lease liabilities     $ 500  
Topic 842 [Member] | Maximum [Member]        
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]        
Lease term 12 months