Goodwill and Other Intangible Assets (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Subject to amortization
Gross Carrying Value	$ 22,029,000	$ 22,029,000
Accumulated Amortization	12,001,000	9,104,000
Net Carrying Value	10,028,000	12,925,000
Total intangible assets
Gross Carrying Value	49,329,000	49,329,000
Net Carrying Value	37,328,000	40,225,000
Goodwill recognized in conjunction with the acquisition	12,104,000	12,104,000
Amortization of Intangible Assets	2,900,000	2,800,000	2,700,000
Estimated amortization expense
2015	2,498,000
2016	2,101,000
2017	1,703,000
2018	1,308,000
2019	930,000
Thereafter	1,488,000
Net Carrying Value	10,028,000	12,925,000
Trade Names [Member]
Not subject to amortization
Carrying Value - Brand name	27,300,000	27,300,000
System Metrics Corporation
Total intangible assets
Intangible assets recognized		4,380,000
Goodwill recognized in conjunction with the acquisition		10,527,000
Wavecom Solutions Corporation
Total intangible assets
Intangible assets recognized		650,000
Goodwill recognized in conjunction with the acquisition		1,577,000
Telecommunications [Member] | Wavecom Solutions Corporation
Total intangible assets
Goodwill recognized in conjunction with the acquisition		1,600,000
Data Center Colocation Services | System Metrics Corporation
Total intangible assets
Goodwill recognized in conjunction with the acquisition		10,500,000
Customer relationships
Subject to amortization
Gross Carrying Value	21,709,000	21,709,000
Accumulated Amortization	11,799,000	8,983,000
Net Carrying Value	9,910,000	12,726,000
Estimated amortization expense
Net Carrying Value	9,910,000	12,726,000
Customer relationships | System Metrics Corporation
Total intangible assets
Intangible assets recognized		4,300,000
Estimated useful life, intangible assets acquired		13 years
Customer relationships | Wavecom Solutions Corporation
Total intangible assets
Intangible assets recognized			900,000
Estimated useful life, intangible assets acquired			6 years
Trade name and other
Subject to amortization
Gross Carrying Value	320,000	320,000
Accumulated Amortization	202,000	121,000
Net Carrying Value	118,000	199,000
Estimated amortization expense
Net Carrying Value	118,000	199,000
Other Intangible Assets [Member] | System Metrics Corporation
Total intangible assets
Intangible assets recognized		100,000
Other Intangible Assets [Member] | Wavecom Solutions Corporation
Total intangible assets
Intangible assets recognized			$ 200,000