Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 24,308	$ 8,493
Accounts receivable, net	222,472	233,487
Inventories, net	209,180	221,342
Income taxes receivable	43,950	2,568
Prepaid expenses and other current assets	14,638	17,539
Total current assets	514,548	483,429
Property, plant, and equipment, net	429,002	459,724
Operating lease assets, net	40,902	43,616
Goodwill, net	75,757	482,306
Other intangible assets, net	223,958	230,091
Other noncurrent assets	27,843	28,701
Total assets	1,312,010	1,727,867
Current liabilities:
Current portion of long-term debt	25,643	25,617
Accounts payable	75,392	78,368
Accrued liabilities	43,227	48,840
Current operating lease liabilities	8,361	8,311
Income taxes payable	2,845	4,174
Deferred revenue	20,721	17,761
Total current liabilities	176,189	183,071
Long-term debt	239,229	222,552
Long-term operating lease liabilities	33,323	35,777
Deferred income taxes	38,506	38,079
Other noncurrent liabilities	22,131	24,421
Total liabilities	509,378	503,900
Stockholders' equity:
Common stock, $.01 par value, 200,000,000 shares authorized, 73,212,778 shares and 72,546,321 shares issued, respectively	732	726
Additional paid-in capital	1,115,677	1,114,521
Retained earnings	392,669	797,710
Accumulated other comprehensive loss	(82,537)	(67,746)
Treasury stock, at cost, 12,268,293 and 12,045,065 shares, respectively	(623,909)	(621,244)
Total stockholders' equity	802,632	1,223,967
Total liabilities and stockholders' equity	$ 1,312,010	$ 1,727,867