Acquisitions (Details) (IdeaOne Telecom [Member], USD $)	Mar. 01, 2012
IdeaOne Telecom [Member]
Business Acquisition [Line Items]
Business Acquisition, cost of acquired entity, total purchase price	$ 26,337,000
Business Acquisition, cost of acquired entity, cash paid	4,337,000
Business Acquisition, cost of acquired entity, liabilities incurred	22,000,000
Business Acquisition, liabilities assumed and paid	$ 1,843,000