Subsequent Event Subsequent Events (Notes)	9 Months Ended
Sep. 30, 2021
Subsequent Events [Abstract]
Subsequent Events [Text Block]	Subsequent EventOn October 21, 2021, the Company announced that its Board of Directors had declared a cash dividend of $0.04 per share of TriMas Corporation common stock, which will be payable on November 10, 2021 to shareholders of record as of the close of business on November 3, 2021. This is TriMas’ first dividend since its initial public offering in 2007.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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