SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details 8) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Accounting for grants
Amount spent in capital expenditures	$ 69,316,000	$ 42,154,000	$ 41,331,000
Minimum
Accounting for grants
Term of depreciation of grant	5 years
Maximum
Accounting for grants
Term of depreciation of grant	20 years
Stimulus programs
Accounting for grants
Amount spent in capital expenditures	80,200,000
Amount that has been funded or will be funded	58,600,000
Universal Service Fund programs
Accounting for grants
Amount received	$ 1,500,000