CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
CONDENSED CONSOLIDATED STATEMENTS OF INCOME
NET SALES	$ 176,054	$ 197,213
COSTS OF OPERATIONS	157,516	174,616
GROSS PROFIT	18,538	22,597
OPERATING EXPENSES:
Selling, general and administrative expenses	10,974	10,215
NON-OPERATING (INCOME) EXPENSES:
Interest expense, net	359	668
Other (income) expense, net	91	254
Total expense, net	11,424	11,137
INCOME BEFORE INCOME TAXES	7,114	11,460
INCOME TAX PROVISION	1,683	2,800
NET INCOME	$ 5,431	$ 8,660
BASIC INCOME PER COMMON SHARE (in dollars per share)	$ 0.48	$ 0.76
CASH DIVIDENDS DECLARED PER COMMON SHARE (in dollars per share)	$ 0.18	$ 0.18
WEIGHTED AVERAGE SHARES OUTSTANDING:
Basic (in shares)	11,405	11,400