Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 5,576	$ 11,117
Receivables, net	57,913	39,384
Inventories	50,556	33,436
Prepaid expenses and other current assets	11,552	3,383
Refundable income taxes	102	0
Total current assets	125,699	87,320
Property, plant and equipment	137,443	126,837
Less accumulated depreciation and amortization	(71,325)	(70,268)
Net property, plant and equipment	66,118	56,569
Goodwill	114,921	107,905
Intangible assets, net	70,514	67,585
Non-qualified deferred compensation plan	4,008	4,327
Finance lease right of use assets	241	271
Operating lease right of use assets	12,420	9,053
Other assets	1,130	1,102
Total assets	395,051	334,132
Current liabilities:
Accounts payable	23,443	10,611
Accrued expenses	17,928	12,700
Deferred revenue	5,612	4,247
Finance lease liabilities	58	58
Operating lease liabilities	2,341	2,181
Income taxes payable	0	909
Current installments of long-term debt	4,000	4,000
Total current liabilities	53,382	34,706
Long-term debt, excluding current installments	96,000	71,000
Deferred income taxes	3,329	3,263
Non-qualified deferred compensation plan	4,054	4,337
Finance lease liabilities	186	215
Operating lease liabilities	10,229	6,903
Other liabilities	20,581	19,262
Total liabilities	187,761	139,686
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $.01 par value, 1,000,000 shares authorized; no shares issued	0	0
Common stock, $.01 par value, 20,000,000 shares authorized; 7,596,090 and 7,566,531 shares issued and outstanding, respectively, at June 30, 2022; 7,564,645 and 7,535,086 shares issued and outstanding, respectively, at December 31, 2021	76	75
Additional paid-in capital	34,342	34,151
Retained earnings	174,594	160,807
Accumulated other comprehensive loss	(1,135)	0
Treasury stock at cost: 29,559 shares at June 30, 2022 and 29,559 shares at December 31, 2021	(587)	(587)
Total stockholders’ equity	207,290	194,446
Total liabilities and stockholders' equity	$ 395,051	$ 334,132