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LONG-TERM OBLIGATIONS (Details) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
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Long-Term Obligations |  |
Long-term obligations gross including current maturities | $ 776,941 | $ 778,788
Current maturities of long-term obligations | (4,258) | (4,603)
Total long-term obligations | 772,683 | 774,185
Deferred Finance Costs, Net, Total | 1,392 | 1,448
Deferred debt issuance costs noncurrent | 1,392 | 1,448
Long-term obligations including current maturities | 775,549 | 777,340
Current maturities of long-term obligations | (4,258) | (4,603)
Long-term obligations, net of unamortized debt issuance costs | 771,291 | 772,737
Aggregate long-term maturities, excluding capital lease obligations |  |
2017 | 3,513 |
2018 | 79,849 |
2019 | 2,789 |
2020 | 85,838 |
2021 | 1,726 |
Thereafter | 601,901 |
Notes payable 0.61% - 16.00%, due in monthly and annual installments through 2025 |  |
Long-Term Obligations |  |
Long-term obligations gross including current maturities | 16,616 | 18,246
Long-term obligations including current maturities | $ 16,616 | $ 18,246
Notes payable 0.61% - 16.00%, due in monthly and annual installments through 2025 | Minimum |  |
Long-Term Obligations |  |
Interest rate on notes (as a percent) | 0.61% | 0.61%
Notes payable 0.61% - 16.00%, due in monthly and annual installments through 2025 | Maximum |  |
Long-Term Obligations |  |
Interest rate on notes (as a percent) | 16.00% | 16.00%
Senior unsecured notes 6.0%, due in 2018 |  |
Long-Term Obligations |  |
Long-term obligations gross including current maturities | $ 75,000 | $ 75,000
Deferred Finance Costs, Net, Total | 30 | 37
Long-term obligations including current maturities | $ 74,970 | $ 74,963
Interest rate on notes (as a percent) | 6.00% | 6.00%
Senior unsecured notes 3.8%, due in 2020 |  |
Long-Term Obligations |  |
Long-term obligations gross including current maturities | $ 84,000 | $ 84,000
Deferred Finance Costs, Net, Total | 113 | 119
Long-term obligations including current maturities | $ 83,887 | $ 83,881
Interest rate on notes (as a percent) | 3.80% | 3.80%
Senior unsecured notes 3.2%, due in 2022 |  |
Long-Term Obligations |  |
Long-term obligations gross including current maturities | $ 75,000 | $ 75,000
Deferred Finance Costs, Net, Total | 132 | 138
Long-term obligations including current maturities | $ 74,868 | $ 74,862
Interest rate on notes (as a percent) | 3.20% | 3.20%
Senior unsecured notes 3.5%, due in 2023 |  |
Long-Term Obligations |  |
Long-term obligations gross including current maturities | $ 125,000 | $ 125,000
Deferred Finance Costs, Net, Total | 247 | 256
Long-term obligations including current maturities | $ 124,753 | $ 124,744
Interest rate on notes (as a percent) | 3.50% | 3.50%
Senior unsecured notes 3.4%, due in 2024 |  |
Long-Term Obligations |  |
Long-term obligations gross including current maturities | $ 50,000 | $ 50,000
Deferred Finance Costs, Net, Total | 101 | 104
Long-term obligations including current maturities | $ 49,899 | $ 49,896
Interest rate on notes (as a percent) | 3.40% | 3.40%
Senior unsecured notes 3.5%, due in 2024 |  |
Long-Term Obligations |  |
Long-term obligations gross including current maturities | $ 100,000 | $ 100,000
Deferred Finance Costs, Net, Total | 247 | 256
Long-term obligations including current maturities | $ 99,753 | $ 99,744
Interest rate on notes (as a percent) | 3.50% | 3.50%
Senior unsecured notes 3.6%, due in 2025 |  |
Long-Term Obligations |  |
Long-term obligations gross including current maturities | $ 125,000 | $ 125,000
Deferred Finance Costs, Net, Total | 261 | 269
Long-term obligations including current maturities | $ 124,739 | $ 124,731
Interest rate on notes (as a percent) | 3.60% | 3.60%
Senior unsecured notes 3.6%, due in 2026 |  |
Long-Term Obligations |  |
Long-term obligations gross including current maturities | $ 125,000 | $ 125,000
Deferred Finance Costs, Net, Total | 261 | 269
Long-term obligations including current maturities | $ 124,739 | $ 124,731
Interest rate on notes (as a percent) | 3.60% | 3.60%
Capital lease obligations |  |
Long-Term Obligations |  |
Long-term obligations gross including current maturities | $ 1,325 | $ 1,542
Long-term obligations including current maturities | $ 1,325 | $ 1,542

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