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SEGMENT REPORTING (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014 item	Mar. 31, 2013	Dec. 31, 2013
SEGMENT REPORTING
Number of reportable segments	4
Revenue
Revenue	$ 75,174	$ 64,832
Depreciation and amortization	11,980	11,988
Non-cash stock-based compensation	1,058	806
Operating income (loss)	16,248	12,079
Segment Assets
Net fixed assets	252,303		254,632
Goodwill	45,077		45,077
Total assets	826,522		859,719
Capital Expenditures
Capital expenditures	8,736	15,355
U.S. Wireless
Revenue
Revenue	28,392	21,213
International wireless
Revenue
Revenue	23,148	21,430
Wireline
Revenue
Revenue	21,530	20,564
Equipment and other
Revenue
Revenue	2,104	1,625
Reconciling Items
Revenue
Revenue	(636)	(1,852)
Depreciation and amortization	616	359
Non-cash stock-based compensation	1,058	806
Operating income (loss)	(5,328)	(4,806)
Segment Assets
Net fixed assets	15,478		6,731
Total assets	351,164		390,944
Capital Expenditures
Capital expenditures	427	549
Reconciling Items | Wireline
Revenue
Revenue	(636)	(1,852)
U.S. Wireless | Discontinued operations
Segment Assets
Total assets	163		4,748
U.S. Wireless | Operating segments
Revenue
Revenue	28,723	21,468
Depreciation and amortization	3,303	3,611
Operating income (loss)	13,589	9,717
Segment Assets
Net fixed assets	67,550		73,592
Goodwill	32,148		32,148
Total assets	153,675		151,094
Capital Expenditures
Capital expenditures	5,337	4,480
U.S. Wireless | Operating segments | U.S. Wireless
Revenue
Revenue	28,392	21,213
U.S. Wireless | Operating segments | Wireline
Revenue
Revenue	152	152
U.S. Wireless | Operating segments | Equipment and other
Revenue
Revenue	179	103
International Integrated Telephony | Operating segments
Revenue
Revenue	21,797	22,691
Depreciation and amortization	4,313	4,781
Operating income (loss)	5,635	5,942
Segment Assets
Net fixed assets	115,465		118,917
Total assets	201,665		197,903
Capital Expenditures
Capital expenditures	2,176	4,120
International Integrated Telephony | Operating segments | International wireless
Revenue
Revenue	6,897	6,754
International Integrated Telephony | Operating segments | Wireline
Revenue
Revenue	14,706	15,683
International Integrated Telephony | Operating segments | Equipment and other
Revenue
Revenue	194	254
Island Wireless | Operating segments
Revenue
Revenue	17,923	15,894
Depreciation and amortization	2,608	2,595
Operating income (loss)	3,426	1,634
Segment Assets
Net fixed assets	27,363		29,310
Goodwill	5,438		5,438
Total assets	76,476		74,427
Capital Expenditures
Capital expenditures	366	1,111
Island Wireless | Operating segments | International wireless
Revenue
Revenue	16,251	14,676
Island Wireless | Operating segments | Equipment and other
Revenue
Revenue	1,672	1,218
U.S. Wireline | Operating segments
Revenue
Revenue	7,367	6,631
Depreciation and amortization	1,140	642
Operating income (loss)	(1,074)	(408)
Segment Assets
Net fixed assets	26,447		26,082
Goodwill	7,491		7,491
Total assets	43,542		45,351
Capital Expenditures
Capital expenditures	430	5,095
U.S. Wireline | Operating segments | Wireline
Revenue
Revenue	7,308	6,581
U.S. Wireline | Operating segments | Equipment and other
Revenue
Revenue	$ 59	$ 50

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