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Inventories (Tables)
 9 Months Ended
Sep. 30, 2019
Inventory Disclosure [Abstract]  
Components of inventories
Inventories, net, consisting primarily of purchased goods which are offered for resale, were as follows:
 
(Dollars in thousands)
 
September 30, 2019
 
December 31, 2018
Inventories, gross
$
59,552

 
$
58,215

Reserve for obsolete and excess inventory
(4,658
)
 
(5,328
)
Inventories, net
$
54,894

 
$
52,887