CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 218,898	$ 475,120
Receivables, net	575,142	494,923
Inventories, net	436,250	378,866
Other current assets	53,953	52,951
Total current assets	1,284,243	1,401,860
Property, plant, and equipment, net	374,995	390,235
Goodwill	1,103,562	1,096,329
Other intangible assets, net	449,096	329,668
Other assets	18,292	18,229
Total assets	3,230,188	3,236,321
Current liabilities:
Current portion of long-term debt and short-term debt	959	150
Accounts payable	179,566	185,176
Accrued expenses	131,263	150,406
Income taxes payable	4,957	4,564
Deferred revenue	231,187	214,891
Other current liabilities	47,752	35,810
Total current liabilities	595,684	590,997
Long-term debt	813,150	813,989
Deferred tax liabilities, net	56,143	49,360
Accrued pension and other postretirement benefit costs	65,698	121,043
Long-term portion of environmental reserves	14,757	14,546
Other liabilities	108,660	118,586
Total liabilities	1,654,092	1,708,521
Stockholders' Equity
Common stock, $1 par value,100,000,000 shares authorized as of June 30, 2018 and December 31, 2017; 49,187,378 shares issued as of June 30, 2018 and December 31, 2017; outstanding shares were 43,981,463 as of June 30, 2018 and 44,123,519 as of December 31, 2017	49,187	49,187
Additional paid in capital	119,025	120,609
Retained earnings	2,047,250	1,944,324
Accumulated other comprehensive loss	(239,516)	(216,840)
Common treasury stock, at cost (5,205,915 shares as of June 30, 2018 and 5,063,859 shares as of December 31, 2017)	(399,850)	(369,480)
Total stockholders' equity	1,576,096	1,527,800
Total liabilities and stockholders' equity	$ 3,230,188	$ 3,236,321