CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
NET SALES	$ 201,500	$ 181,158	$ 417,045	$ 351,070
COSTS OF OPERATIONS	183,126	160,568	383,331	314,649
GROSS PROFIT	18,374	20,590	33,714	36,421
OPERATING EXPENSES:
Selling, general and administrative expenses	12,651	12,019	25,037	23,070
NON-OPERATING (INCOME) EXPENSES:
Interest expense, net	628	340	1,046	615
Other (income) expense, net	275	(48)	327	228
Total expense, net	13,554	12,311	26,410	23,913
INCOME BEFORE INCOME TAXES	4,820	8,279	7,304	12,508
INCOME TAX PROVISION	1,063	1,763	1,482	2,814
NET INCOME	$ 3,757	$ 6,516	$ 5,822	$ 9,694
BASIC INCOME PER COMMON SHARE (in dollars per share)	$ 0.33	$ 0.57	$ 0.51	$ 0.85
DILUTED INCOME PER COMMON SHARE (in dollars per share)	0.33	0.57	0.51	0.85
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.18	$ 0.18	$ 0.36	$ 0.36
WEIGHTED AVERAGE SHARES OUTSTANDING:
Basic (in shares)	11,417	11,411	11,417	11,411
Diluted (in shares)	11,417	11,411	11,421	11,411