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Inventories (Tables)
3 Months Ended
Mar. 31, 2013
Inventories [Abstract]  
Schedule of Inventory, Current [Table Text Block]
Inventory balances by segment are as follows:
 
(Dollars in thousands)
 
March 31, 2013
 
 
December 31, 2012
 
Fiber and Data
 
$
522
 
 
$
665
 
Equipment
 
$
5,069
 
 
$
6,201
 
Telecom
 
$
1,663
 
 
$
1,513