Goodwill and Other Intangible Assets (Details) (USD $)	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Goodwill and Other Intangible Assets [Abstract]
Number of business segments	3
Goodwill [Line Items]
Goodwill	$ 29,028,000		$ 27,303,000
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	11,429,000		8,129,000
Accumulated Amortization	6,172,000		5,815,000
Amortization of intangibles	357,000	177,000
Finite-Lived Intangible Assets, Future Amortization Expense [Abstract]
Future amortization expense for remainder of fiscal year	447,000
2013	893,000
2014	762,000
2015	629,000
2016	567,000
2017	554,000
Customer relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	8,499,000		5,299,000
Accumulated Amortization	5,016,000		4,746,000
Customer relationships [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	8 years
Customer relationships [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	1 year
Other intangibles [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	2,930,000		2,830,000
Accumulated Amortization	1,156,000		1,069,000
Other intangibles [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	5 years
Other intangibles [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	1 year
Fiber and Data Segment [Member]
Goodwill [Line Items]
Goodwill	5,384,000		3,659,000
Equipment Segment [Member]
Goodwill [Line Items]
Goodwill	596,000		596,000
Telecom [Member]
Goodwill [Line Items]
Goodwill	$ 23,048,000		$ 23,048,000