Segment Reporting and Geographic Information (Statement of Operations Information by Business Segment) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013
Gross profit
Gross Profit	$ 13,251		$ 13,027
Depreciation expense
Depreciation expense	624		401
Operating income (loss)
Operating Income (Loss)	(3,849)		(4,013)
Total before intersegment adjustments [Member]
Gross profit
Gross Profit	13,249		13,023
Operating income (loss)
Operating Income (Loss)	(1,994)		(428)
Network Equipment [Member]
Gross profit
Gross Profit	10,759		10,766
Depreciation expense
Depreciation expense	536		300
Operating income (loss)
Operating Income (Loss)	(2,839)		(1,119)
Network Integration [Member]
Gross profit
Gross Profit	2,490		2,257
Depreciation expense
Depreciation expense	49		53
Operating income (loss)
Operating Income (Loss)	845		691
Corporate Unallocated and Intersegment Adjustments [Member]
Gross profit
Gross Profit	2	[1]	4	[1]
Operating income (loss)
Operating Income (Loss)	(1,855)	[1]	(3,585)	[1]
Corporate [Member]
Depreciation expense
Depreciation expense	$ 39		$ 48

[1] djustments reflect the elimination of intersegment revenue and profit in inventory.