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LONG-TERM DEBT AND FINANCING ARRANGEMENTS (Summary) (Details) - USD ($) $ in Thousands | Jun. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Long-term debt obligations |  |
Long-term debt | $ 257,318 | $ 243,673
Less current portion | 62,588 | 64,143
Long-term debt, less current portion | 194,730 | 179,530
Payments under long-term debt obligations |  |
Due in one year or less | 68,166 |
Due after one year through two years | 45,379 |
Due after two years through three years | 135,177 |
Due after three years through four years | 13,459 |
Due after four years through five years | 9,160 |
Due after five years | 257 |
Total payments | 271,598 |
Less amounts representing interest | 14,280 |
Long-term debt | 257,318 | 243,673
Credit Facility |  |
Long-term debt obligations |  |
Long-term debt | $ 70,000 | 70,000
Interest rate (as a percent) | 2.70% |
Payments under long-term debt obligations |  |
Due in one year or less | $ 2,026 |
Due after one year through two years | 2,251 |
Due after two years through three years | 71,199 |
Total payments | 75,476 |
Less amounts representing interest | 5,476 |
Long-term debt | 70,000 | 70,000
Credit Facility | Interest rate swap agreement |  |
Long-term debt obligations |  |
Amount of borrowings covered by the interest rate swap | $ 50,000 |
Effective fixed interest rate on hedged borrowings (as a percent) | 3.35% |
Accounts receivable securitization program |  |
Long-term debt obligations |  |
Long-term debt | $ 45,000 | 35,000
Interest rate (as a percent) | 2.00% |
Payments under long-term debt obligations |  |
Due in one year or less | $ 1,029 |
Due after one year through two years | 1,173 |
Due after two years through three years | 45,948 |
Total payments | 48,150 |
Less amounts representing interest | 3,150 |
Long-term debt | 45,000 | 35,000
Notes payable |  |
Long-term debt obligations |  |
Long-term debt | $ 141,741 | 138,032
Weighted-average interest rate (as a percent) | 2.40% |
Payments under long-term debt obligations |  |
Due in one year or less | $ 64,880 |
Due after one year through two years | 41,718 |
Due after two years through three years | 17,887 |
Due after three years through four years | 13,452 |
Due after four years through five years | 9,155 |
Due after five years | 257 |
Total payments | 147,349 |
Less amounts representing interest | 5,608 |
Long-term debt | 141,741 | 138,032
Capital lease obligations |  |
Long-term debt obligations |  |
Long-term debt | $ 577 | 641
Weighted-average interest rate (as a percent) | 5.70% |
Payments under long-term debt obligations |  |
Due in one year or less | $ 231 |
Due after one year through two years | 237 |
Due after two years through three years | 143 |
Due after three years through four years | 7 |
Due after four years through five years | 5 |
Total payments | 623 |
Less amounts representing interest | 46 |
Long-term debt | $ 577 | $ 641

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