Condensed Consolidated Statements of Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Income Statement [Abstract]
Sales	$ 728,029	$ 544,662	$ 1,364,112	$ 1,050,383
Cost of sales	669,273	496,749	1,247,754	960,243
Gross profit	58,756	47,913	116,358	90,140
Selling, general and administrative expenses	35,842	34,034	72,131	64,582
Amortization of intangible assets	1,592	1,599	3,201	3,197
Restructuring charges and other costs (income)	(1,110)	1,581	3,187	3,172
Ransomware related incident costs (recovery), net	0	0	0	(3,444)
Income from operations	22,432	10,699	37,839	22,633
Interest expense	(2,185)	(2,079)	(3,935)	(4,228)
Interest income	261	164	391	329
Other income	784	440	490	164
Income before income taxes	21,292	9,224	34,785	18,898
Income tax expense	4,071	1,855	6,604	3,612
Net income	$ 17,221	$ 7,369	$ 28,181	$ 15,286
Earnings per share:
Basic	$ 0.49	$ 0.21	$ 0.80	$ 0.42
Diluted	$ 0.49	$ 0.20	$ 0.79	$ 0.42
Weighted-average number of shares outstanding:
Basic	35,157	35,753	35,201	36,000
Diluted	35,336	36,061	35,616	36,474