Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 41,674	$ 54,268
Accounts receivable, net of allowance for doubtful accounts of $1,159 and $610 at June 30, 2019 and December 31, 2018 respectively	101,595	99,545
Inventories	68,430	67,187
Prepaid expenses	5,344	3,830
Prepaid income taxes	977	0
Assets held for sale	12,313	0
Other current assets	1,552	1,484
Total current assets	231,885	226,314
Property, plant and equipment, net	204,019	194,339
Goodwill	506,852	447,995
Intangible assets with finite lives, net	139,769	105,985
Right of use assets	7,203	0
Other assets	8,592	6,722
Total assets	1,098,320	981,355
Current liabilities:
Trade accounts payable	29,439	33,345
Accrued expenses	22,979	22,025
Accrued compensation and other benefits	6,749	11,022
Dividends payable	78	15,220
Income tax payable	0	444
Lease liabilities - current	2,316	0
Liabilities held for sale	530	0
Total current liabilities	62,091	82,056
Revolving loan	228,569	156,000
Deferred income taxes	57,386	44,309
Lease liabilities - non-current	4,873	0
Derivative liabilities	4,617	0
Other long-term obligations	8,439	7,372
Total liabilities	365,975	289,737
Commitments and contingencies (Note 16)
Stockholders' equity:
Preferred stock, $25 par value. Authorized 2,000,000 shares; none issued and outstanding	0	0
Common stock, $.0667 par value. Authorized 120,000,000 shares; 32,355,296 shares issued and outstanding at June 30, 2019 and 32,256,915 shares issued and 32,256,209 outstanding at December 31, 2018, respectively	2,157	2,151
Additional paid-in capital	169,743	165,098
Retained earnings	566,639	528,027
Accumulated other comprehensive loss	(6,194)	(3,602)
Treasury stock, at cost: 0 and 706 shares at June 30, 2019 and December 31, 2018, respectively	0	(56)
Total stockholders' equity	732,345	691,618
Total liabilities and stockholders' equity	$ 1,098,320	$ 981,355