Condensed Consolidated Balance Sheet - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 118,161	$ 134,244
Trade receivables, less allowance for doubtful accounts of $5,846 and $5,540	236,245	244,198
Inventories (Note 4)	183,829	153,739
Investments, short-term (Note 18)	56,996	0
Prepaid income taxes	34,147	31,448
Notes receivable, insurance companies (Note 19)	3,525	17,333
Prepaid expenses and other current assets	40,434	41,335
Total current assets	673,337	622,297
Property, plant and equipment, net (Note 6)	150,569	157,014
Prepaid pension cost	91,914	83,060
Deferred tax assets (Note 11)	27,360	25,825
Goodwill (Note 14)	416,779	422,185
Intangible assets (Note 14)	173,317	183,088
Notes receivable, insurance companies, noncurrent (Note 19)	60,726	59,567
Insurance receivable (Note 19) and other noncurrent assets	56,681	131,790
Total assets	1,650,683	1,684,826
Current liabilities
Notes payable and current portion of long-term debt, net (Note 13)	20,005	26,680
Accounts payable	71,659	87,061
Employees’ compensation	37,757	39,377
Insurance and product liability (Note 19)	78,019	59,116
Income taxes payable (Note 11)	20,191	0
Warranty reserve (Note 19) and other current liabilities	80,316	77,045
Total current liabilities	307,947	289,279
Long-term debt, net (Note 13)	370,195	447,832
Pensions and other employee benefits	167,373	170,773
Deferred tax liabilities (Note 11)	8,973	9,341
Product liability (Note 19) and other noncurrent liabilities	136,489	165,023
Total liabilities	990,977	1,082,248
Commitments and contingencies (Note 19)
Equity
Preferred stock, 4 1/2% cumulative, $50 par value (Note 8)	3,569	3,569
Common stock, no par value (Note 8)	207,315	194,953
Treasury shares, at cost (Note 8)	(298,466)	(297,834)
Accumulated other comprehensive loss (Note 7)	(183,435)	(171,762)
Retained earnings	925,337	868,675
Total MSA Safety Incorporated shareholders' equity	654,320	597,601
Noncontrolling interests	5,386	4,977
Total shareholders’ equity	659,706	602,578
Total liabilities and shareholders’ equity	$ 1,650,683	$ 1,684,826