Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 76,407	$ 65,672
Accounts receivable, net of allowance for doubtful accounts of $2,280 and $2,080 at June 30, 2020 and December 31, 2019 respectively	97,107	93,444
Inventories	81,546	83,893
Prepaid expenses	5,927	4,385
Prepaid income taxes	0	5,098
Other current assets	2,875	2,454
Total current assets	263,862	254,946
Property, plant and equipment, net	217,003	216,859
Goodwill	522,929	523,998
Intangible assets with finite lives, net	130,866	143,924
Right of use assets	6,159	7,338
Other assets	10,437	8,617
Total assets	1,151,256	1,155,682
Current liabilities:
Trade accounts payable	22,630	37,267
Accrued expenses	30,818	24,604
Accrued compensation and other benefits	10,103	11,057
Dividends payable	136	16,855
Income tax payable	2,279	0
Lease liabilities - current	1,994	2,475
Total current liabilities	67,960	92,258
Revolving loan	218,569	248,569
Deferred income taxes	57,237	56,431
Lease liabilities - non-current	3,860	4,827
Derivative liabilities	2,168	2,103
Other long-term obligations	8,939	7,827
Total liabilities	358,733	412,015
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, $0.0667 par value. Authorized 120,000,000 shares; 32,451,415 shares issued and 32,341,496 shares outstanding at June 30, 2020 and 32,405,796 shares issued and 32,201,917 outstanding at December 31, 2019, respectively	2,164	2,161
Additional paid-in capital	174,073	174,218
Retained earnings	631,814	590,921
Accumulated other comprehensive loss	(5,894)	(5,564)
Treasury stock, at cost: 109,919 and 203,879 shares at June 30, 2020 and December 31, 2019, respectively	(9,634)	(18,069)
Total stockholders' equity	792,523	743,667
Total liabilities and stockholders' equity	$ 1,151,256	$ 1,155,682