Annual report pursuant to Section 13 and 15(d)

Goodwill and Intangible Assets (Details)

v3.4.0.3
Goodwill and Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2015
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2016
Mar. 31, 2015
Mar. 31, 2014
Goodwill [Line Items]              
Goodwill $ 0       $ 0 $ 0 $ 31,997
Goodwill, Transfers           0  
Goodwill impairment 0 $ (20,547) $ (11,450) $ 0 0 (31,997) 0
Kentrox [Member]              
Goodwill [Line Items]              
Goodwill             11,450
Goodwill, Transfers           (11,450)  
CSI [Member]              
Goodwill [Line Items]              
Goodwill             20,547
Goodwill, Transfers           (20,547)  
CSG [Member]              
Goodwill [Line Items]              
Goodwill 0       0 0 0
Goodwill, Transfers           11,450  
Goodwill impairment           (11,450)  
IBW [Member]              
Goodwill [Line Items]              
Goodwill $ 0   $ 20,500   $ 0 0 $ 0
Goodwill, Transfers           20,547  
Goodwill impairment           $ (20,547)