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SUPPLEMENTAL CASH FLOW INFORMATION (Tables) | 12 Months Ended
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Dec. 31, 2017
SUPPLEMENTAL CASH FLOW INFORMATION [Abstract] |
Supplemental Cash Flow Information |
(In thousands) |  | 2017 |  |  | 2016 |  |  | 2015 |
Cash paid for income taxes |  |  | 18,763 |  |  | $ | 26,574 |  |  | $ | 13,509 |
Income tax refunds received |  |  | 9 |  |  |  | 100 |  |  |  | 5 |
Cash paid for interest |  |  | 2,486 |  |  |  | 2,540 |  |  |  | 2,583 |
Noncash financing and investing activity: |  |  |  |  |  |  |  |  |  |  |  |
Fixed assets acquired (adjusted) related to capital lease and financing obligations |  |  | 1,009 |  |  |  | 3,890 |  |  |  | 3,176 |
Increase in financing obligations |  |  | 2,598 |  |  |  | 5,474 |  |  |  | 6,594 |

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