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LONG-TERM DEBT AND FINANCING ARRANGEMENTS (Summary) (Details) - USD ($) $ in Thousands | Jun. 30, 2016 | Dec. 31, 2015
--- | --- | ---
Long-term debt obligations |  |
Long-term debt | $ 225,450 | $ 212,509
Less current portion | 55,406 | 44,910
Long-term debt, less current portion | 170,044 | 167,599
Payments under long-term debt obligations |  |
Due in one year or less | 59,069 |
Due after one year through two years | 78,996 |
Due after two years through three years | 20,453 |
Due after three years through four years | 73,407 |
Due after four years through five years | 2,350 |
Due after five years | 80 |
Total payments | 234,355 |
Less amounts representing interest | 8,905 |
Long-term debt | 225,450 | 212,509
Credit Facility |  |
Long-term debt obligations |  |
Long-term debt | $ 70,000 | 70,000
Interest rate (as a percent) | 1.70% |
Payments under long-term debt obligations |  |
Due in one year or less | $ 1,233 |
Due after one year through two years | 1,338 |
Due after two years through three years | 1,464 |
Due after three years through four years | 70,796 |
Total payments | 74,831 |
Less amounts representing interest | 4,831 |
Long-term debt | 70,000 | 70,000
Accounts receivable securitization program |  |
Long-term debt obligations |  |
Long-term debt | $ 35,000 | 35,000
Interest rate (as a percent) | 1.30% |
Payments under long-term debt obligations |  |
Due in one year or less | $ 466 |
Due after one year through two years | 35,254 |
Total payments | 35,720 |
Less amounts representing interest | 720 |
Long-term debt | 35,000 | 35,000
Notes payable |  |
Long-term debt obligations |  |
Long-term debt | $ 119,723 | 106,703
Weighted-average interest rate (as a percent) | 2.00% |
Payments under long-term debt obligations |  |
Due in one year or less | $ 57,151 |
Due after one year through two years | 42,180 |
Due after two years through three years | 18,759 |
Due after three years through four years | 2,475 |
Due after four years through five years | 2,350 |
Due after five years | 80 |
Total payments | 122,995 |
Less amounts representing interest | 3,272 |
Long-term debt | 119,723 | 106,703
Capital lease obligations |  |
Long-term debt obligations |  |
Long-term debt | $ 727 | 806
Weighted-average interest rate (as a percent) | 5.80% |
Payments under long-term debt obligations |  |
Due in one year or less | $ 219 |
Due after one year through two years | 224 |
Due after two years through three years | 230 |
Due after three years through four years | 136 |
Total payments | 809 |
Less amounts representing interest | 82 |
Long-term debt | $ 727 | $ 806

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