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Discontinued Operations Narrative (Details) (ISDN Resale Services [Member], USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
ISDN Resale Services [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Discontinued operations, monthly referral fee income (percent)	15.00%
Discontinued operations, monthly referral fee income	$ 2,000	$ 12,000
Revenues from the ISDN resale services	0	81,000
Net income from the ISDN resale services	0	28,000
Net current liabilities of discontinued operations	$ 0	$ 50,000

Amount of income (loss) from a disposal group, net of income tax, reported as a separate component of income before extraordinary items after deduction or consideration of the amount allocable to noncontrolling interests. Includes, net of tax, income (loss) from operations during the phase-out period, gain (loss) on disposal, provision (or any reversals of earlier provisions) for loss on disposal, and adjustments of a prior period gain (loss) on disposal.

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