Segment Reporting and Geographic Information (Balance Sheet and Statement of Cash Flow Information) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Additions to Fixed Assets	$ 264	$ 352
Assets	100,181		114,572
Network Equipment [Member]
Segment Reporting Information [Line Items]
Additions to Fixed Assets	228	239
Assets	42,723		40,664
Network Integration [Member]
Segment Reporting Information [Line Items]
Additions to Fixed Assets	42	33
Assets	47,604		56,921
Corporate [Member]
Segment Reporting Information [Line Items]
Additions to Fixed Assets	(6)	80
Corporate Unallocated and Intersegment Adjustments [Member]
Segment Reporting Information [Line Items]
Assets	$ 9,854		$ 16,987