Consolidated Statements of Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019		Dec. 31, 2018		Dec. 31, 2017
Net sales	$ 1,579,040		$ 1,715,081		$ 1,330,696
Costs and expenses
Cost of materials sold (excludes items shown separately below)	1,280,110		1,372,954		1,055,212
Warehouse and processing	99,457		97,565		87,425
Administrative and general	76,863		81,107		69,659
Distribution	48,159		50,347		41,789
Selling	28,839		29,020		26,285
Occupancy	9,972		9,428		8,862
Depreciation	17,686		16,645		16,589
Amortization	1,344		963		889
Total costs and expenses	1,562,430		1,658,029		1,306,710
Operating income	16,610	[1]	57,052	[2]	23,986
Other loss, net	(32)		(307)		(118)
Income before interest and income taxes	16,578		56,745		23,868
Interest and other expense on debt	11,289		10,681		7,518
Income before income taxes	5,289		46,064		16,350
Income tax provision (benefit)	1,433		12,305		(2,613)
Net income	3,856		33,759		18,963
Loss on cash flow hedges	(3,041)
Tax effect of hedges	760
Total comprehensive income	$ 1,575		$ 33,759		$ 18,963
Net income per share - basic (in dollars per share)	$ 0.34		$ 2.95		$ 1.67
Weighted average shares outstanding - basic (in shares)	11,509		11,432		11,381
Net income per share - diluted (in dollars per share)	$ 0.34		$ 2.95		$ 1.67
Weighted average shares outstanding - diluted (in shares)	11,509		11,440		11,381
Dividends declared per share of common stock (in dollars per share)	$ 0.08		$ 0.08		$ 0.08

[1] Operating income (loss) in 2019 includes $3,669 of LIFO income related to the Company's tubular and pipe products segment.

[2] Operating income (loss) in 2018 includes $8,408 of LIFO expense related to the Company's tubular and pipe products segment.