ACQUISITIONS (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended		1 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	May 31, 2011 BDC	May 02, 2011 M3 Wireless, Ltd. BDC	Sep. 30, 2012 M3 Wireless, Ltd. Customer relationships BDC	May 02, 2011 M3 Wireless, Ltd. Customer relationships BDC
Acquisitions
Ownership interest before merger (as a percent)					58.00%
Ownership interest after merger (as a percent)					42.00%
Total consideration						$ 6,655
Purchase price allocation:
Net working capital						675
Property, plant and equipment						10,577
Customer relationships								2,600
Telecommunications licenses						6,100
Goodwill						3,105
Note payable- affiliate						(7,012)
Other long term liabilities						(200)
Non-controlling interests						(9,190)
Net assets acquired						6,655
Assets acquired, related information
Amortization period							12 years
As Reported
Revenue	188,798	194,346	556,981	576,253
Net income	15,965	11,336	35,816	17,648
Earnings per share:
Basic (in dollars per share)	$ 1.03	$ 0.74	$ 2.31	$ 1.15
Diluted (in dollars per share)	$ 1.02	$ 0.73	$ 2.30	$ 1.14
As Adjusted
Revenue				582,341
Net income				$ 18,183
Earnings per share:
Basic (in dollars per share)				$ 1.18
Diluted (in dollars per share)				$ 1.17