Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2018

Accrued Liabilities [Abstract]

Schedule of Accrued Liabilities

Accrued liabilities at December 31 consisted of:

	2018		2017
Payroll and other compensation	$	46,850	$	53,857
Contract liabilities	57,522		44,600
Pension and other postretirement benefits	8,618		8,294
Accrued income taxes	30,391		26,340
Other	63,401		48,150
	$	206,782	$	181,241