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DISCONTINUED OPERATIONS, Summarized Operating Results of Discontinued Operations (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Summarized operating results of the discontinued operations [Abstract]        
Interest expense $ (10,041) $ (1,012) $ (18,649) $ (1,013)
Income (loss) from discontinued operations (11) 27 (20) 44
North America Telecom [Member]        
Summarized operating results of the discontinued operations [Abstract]        
Net revenue 0 3,190 0 6,468
Operating expenses 18 3,113 37 6,342
Income (loss) from operations (18) 77 (37) 126
Interest expense 0 (3) 0 (3)
Interest income and other income (expense) 0 (25) 4 (51)
Income (loss) before income tax (18) 49 (33) 72
Income tax benefit (expense) 7 (22) 13 (28)
Income (loss) from discontinued operations $ (11) $ 27 $ (20) $ 44