CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
NET SALES	$ 169,912	$ 176,054
COSTS OF OPERATIONS	154,081	157,516
GROSS PROFIT	15,831	18,538
OPERATING EXPENSES:
Selling, general and administrative expenses	11,051	10,974
NON-OPERATING (INCOME) EXPENSES:
Interest expense, net	275	359
Other expense, net	276	91
Total expense, net	11,602	11,424
INCOME BEFORE INCOME TAXES	4,229	7,114
INCOME TAX PROVISION	1,051	1,683
NET INCOME	$ 3,178	$ 5,431
Basic Income Per Share (in dollars per share)	$ 0.28	$ 0.48
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.18	$ 0.18
WEIGHTED AVERAGE SHARES OUTSTANDING:
Basic (in shares)	11,410	11,405