OPERATING SEGMENTS (Tables)

6 Months Ended

Jun. 30, 2012

Segment Reporting [Abstract]

Operating Results for Business Segments, with Reconciliations from Segment Profit to Loss Before Income Taxes and Equity in (Earnings) of Equity-Method Investment

	Three Months Ended June 30,							Six Months Ended June 30,
	2012				2011			2012			2011
Revenues:
Data center services	$	41,493		$		32,481		$	81,431		$	64,023
IP services		27,194				27,929			54,284			55,791
Total revenues		68,687				60,410			135,715			119,814
Direct costs of network, sales and services, exclusive of depreciation and        amortization:
Data center services		22,649				19,733			43,619			38,263
IP services		9,992				10,836			20,177			21,336
Total direct costs of network, sales and services, exclusive of depreciation    and amortization		32,641				30,569			63,796			59,599
Segment profit:
Data center services		18,844				12,748			37,812			25,760
IP services		17,202				17,093			34,107			34,455
Total segment profit		36,046				29,841			71,919			60,215
Restructuring		645				1,304			688			1,492
Other operating expenses, including direct costs of customer support, depreciation and amortization		35,310				30,208			69,432			61,282
Income (loss) from operations		91				(1,671	)		1,799			(2,559	)
Non-operating expense		2,008				923			3,634			1,609
Loss before income taxes and equity in (earnings) of equity-method investment	$	(1,917	)	$		(2,594	)	$	(1,835	)	$	(4,168	)