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Accrued Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2017
Payables and Accruals [Abstract] |
Schedule of Accrued Liabilities | Accrued liabilities consist of:
(in thousands) |  | 2017 |  | 2016
Salaries and wages |  | $17,916 |  |  | $18,520 |
Accrual for compensated absences |  | 11,223 |  |  | 10,181 |
Employee benefits |  | 13,553 |  |  | 13,277 |
Workers’ compensation |  | 2,397 |  |  | 2,053 |
Pension liability - current portion |  | 2,094 |  |  | 2,057 |
Postretirement medical benefits - current portion |  | 4,108 |  |  | 4,195 |
Returns and allowances |  | 11,370 |  |  | 13,714 |
Billings in excess of revenue recognized |  | 2,569 |  |  | 2,334 |
Contract loss reserve |  | 11,902 |  |  | 56 |
Professional fees |  | 2,310 |  |  | 3,068 |
Utilities |  | 910 |  |  | 991 |
Dividends |  | 5,474 |  |  | 5,458 |
Restructuring costs |  | 2,714 |  |  | 4,668 |
Interest |  | 817 |  |  | 1,218 |
Other |  | 16,557 |  |  | 13,405 |
Total |  | $105,914 |  |  | $95,195

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