Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2019

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities

Accrued liabilities consist of:

(in thousands)	2019	2018
Salaries and wages	$22,878	$20,821
Contract loss reserve	17,190	20,708
Employee benefits	14,235	12,316
Returns and allowances	11,249	11,343
Accrual for compensated absences	10,445	10,636
Dividends	6,139	5,808
Contract liabilities	5,656	9,025
Lease liability - Operating lease	4,023	—
Lease liability - Financing lease	1,835	—
Postretirement medical benefits – current portion	3,808	3,890
Restructuring costs	1,342	5,534
Professional fees	2,999	2,575
Pension liability – current portion	2,155	2,124
Workers' compensation	1,982	1,794
Utilities	790	974
Interest	517	901
Other	18,642	20,581
Total	$125,885	$129,030