Segment Reporting and Geographic Information (Balance Sheet and Statement of Cash Flow Information) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Segment Reporting Information [Line Items]
Additions to Fixed Assets	$ 2,116	$ 1,858
Assets	120,587		128,565
Network Equipment [Member]
Segment Reporting Information [Line Items]
Additions to Fixed Assets	2,064	440
Assets	45,249		44,445
Network Integration [Member]
Segment Reporting Information [Line Items]
Additions to Fixed Assets	46	52
Assets	45,071		47,400
Corporate [Member]
Segment Reporting Information [Line Items]
Additions to Fixed Assets	6	76
Corporate Unallocated and Intersegment Adjustments [Member]
Segment Reporting Information [Line Items]
Assets	30,267		36,720
Discontinued Operations [Member]
Segment Reporting Information [Line Items]
Additions to Fixed Assets	$ 0	$ 1,290