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Inventories
 12 Months Ended
Dec. 31, 2017
Inventory Disclosure [Abstract]  
Inventories
Inventories, net

Inventories, net, consisting primarily of purchased goods which are offered for resale, were as follows:
 
(Dollars in thousands)
 
December 31,
 
2017
 
2016
Inventories, gross
$
56,492

 
$
48,038

Reserve for obsolete and excess inventory
(5,564
)
 
(5,477
)
Inventories, net
$
50,928

 
$
42,561