Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 6,408	$ 5,172
Accounts receivable, less allowance for doubtful accounts of $5,852 and $7,667, respectively	92,500	101,902
Accounts receivable - other	2,338	1,356
Inventories	103,371	89,766
Contract assets	37,575	39,231
Prepaid expenses and other current assets	15,633	11,030
Total current assets	257,825	248,457
Property, plant and equipment, net	46,928	36,644
Operating lease right-of-use assets	6,299	3,826
Intangible assets, net	59,414	58,746
Goodwill	38,557	36,116
Other assets	13,154	10,135
Total assets	422,177	393,924
Current liabilities:
Accounts payable	38,096	39,327
Other current liabilities	36,069	44,670
Current portion of long-term debt	15,286	15,286
Current portion of acquisition-related contingent liabilities	3,929	5,589
Total current liabilities	93,380	104,872
Long-term debt	80,882	72,372
Long-term pension liability	14,548	14,574
Long-term acquisition-related contingent liabilities	0	1,892
Long-term operating lease liabilities	2,189	1,599
Deferred tax liability	1,448	450
Other long-term liabilities	8,795	6,535
Commitments and contingencies (Note 6)
Shareholders’ equity:
Preferred stock, $.001 par value - authorized 300,000 shares (none issued)	0	0
Common stock, $.001 par value - authorized 50,000,000 shares, issued and outstanding 15,960,253 and 15,391,660 shares, respectively.	16	15
Additional paid-in capital	66,996	61,844
Retained earnings	159,711	141,972
Accumulated other comprehensive income (loss), net of tax:
Pensions	(4,285)	(10,898)
Cash flow hedges	53	69
Foreign currency translation adjustment	(1,556)	(1,372)
Total shareholders’ equity	220,935	191,630
Total liabilities and shareholders’ equity	$ 422,177	$ 393,924