LONG-TERM DEBT (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total debt	$ 957,497	$ 984,247
Less: current portion of long-term debt	15,372	3,500
Less: original issue discount and issuance costs	12,127	13,581
Long-term debt, net	929,998	967,166
2017 Credit Facility [Member]
Debt Instrument [Line Items]
Total debt	345,625	347,375
9.25% Senior Subordinated Notes due February 2020 [Member]
Debt Instrument [Line Items]
Total debt	250,000	275,000
7.375% Senior Secured Notes due April 2022 [Member]
Debt Instrument [Line Items]
Total debt	350,000	350,000
Comcast Note due April 2019 [Member]
Debt Instrument [Line Items]
Total debt	$ 11,872	$ 11,872

Amount of long-term portion of original issue discount on debt.

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+ References

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ References

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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