Ascent Industries Co. Annual report pursuant to Section 13 and 15(d)

Revenues - Schedule of Disaggregated Revenues by Source (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 67,946	$ 73,640	$ 78,778	$ 84,804	$ 72,674	$ 77,793	$ 71,894	$ 58,480	$ 305,168	$ 280,841	$ 201,148
Fiberglass and steel liquid storage tanks and separation equipment
Disaggregation of Revenue [Line Items]
Net sales									28,722	31,654	27,600
Heavy wall seamless carbon steel pipe and tube
Disaggregation of Revenue [Line Items]
Net sales									30,607	32,474	25,103
Stainless steel pipe and tube
Disaggregation of Revenue [Line Items]
Net sales									167,907	146,237	100,254
Galvanized pipe and tube
Disaggregation of Revenue [Line Items]
Net sales									23,842	11,877	0
Specialty chemicals
Disaggregation of Revenue [Line Items]
Net sales									$ 54,090	$ 58,599	$ 48,191