Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Current assets:
Cash and cash equivalents	$ 8,315	$ 8,935
Accounts receivable, less allowance for doubtful accounts of $6,971 and $6,393, respectively	105,848	107,053
Accounts receivable - other	6,453	5,546
Inventories	129,514	120,555
Contract assets	40,923	38,018
Prepaid expenses and other current assets	21,196	19,162
Total current assets	312,249	299,269
Property, plant and equipment, net	52,034	49,690
Operating lease right-of-use assets	8,511	8,246
Intangible assets, net	59,380	60,420
Goodwill	39,652	39,434
Other assets	13,542	13,186
Total assets	485,368	470,245
Current liabilities:
Accounts payable	52,858	52,340
Other current liabilities	32,986	38,989
Current portion of long-term debt	15,286	15,286
Current portion of acquisition-related contingent liabilities	4,763	4,507
Total current liabilities	105,893	111,122
Long-term debt	114,740	100,845
Long-term pension liability	15,545	15,420
Long-term acquisition-related contingent liabilities	2,719	2,569
Long-term operating lease liabilities	3,956	3,729
Deferred tax liability	515	359
Other long-term liabilities	9,422	9,211
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 16,171,034 and 16,127,505 shares, respectively	16	16
Additional paid-in capital	70,685	69,351
Retained earnings	166,914	163,836
Accumulated other comprehensive income (loss), net of tax:
Pensions	(4,258)	(4,577)
Cash flow hedges	42	47
Foreign currency translation adjustment	(821)	(1,683)
Total shareholders’ equity	232,578	226,990
Total liabilities and shareholders’ equity	$ 485,368	$ 470,245