Note 19 - Subsequent Events	12 Months Ended
Dec. 31, 2021
Notes to Financial Statements
Subsequent Events [Text Block]	19. SUBSEQUENT EVENTS Effective January 10, 2022, Crawford REV Acquisition Company LLC (name later changed to Reverso Pumps LLC or “Reverso Pumps”), a Delaware limited liability company and indirect wholly-owned subsidiary of Crawford United Corporation (the “Company”), completed the acquisition (the “Reverso Transaction”) of substantially all the assets of Reverso Pumps, Inc., a Florida corporation and developer, designer, manufacturer, seller and distributor of oil change systems, fuel and oil transfer pumps, fuel primers, fuel polishing systems and engine flushing systems (“Reverso”), pursuant to an Asset Purchase Agreement (the “Reverso Asset Purchase Agreement”) entered into and effective January 10, 2022 by and among Reverso Pumps, the Seller, the seller parties named therein and the Seller Parties’ representatives named therein. Upon the closing of the Transaction, the assets were transferred and assigned to Reverso Pumps in exchange for approximately $2.5 million in cash, subject to customary post-closing adjustments. Additionally, effective on January 10, 2022, Crawford SEP Acquisition Company LLC (name later changed to Separ America LLC or “Separ America”), a Delaware limited liability company and indirect wholly-owned subsidiary of the Company, completed the acquisition (the “Separ Transaction,” and with the Reverso Transaction, the “Transactions”) of substantially all the assets of Separ of the Americas, LLC, a Florida limited liability company and developer, designer, manufacturer, seller and distributor of oil change systems, fuel and oil transfer pumps, fuel primers, fuel polishing systems and engine flushing systems (“Separ”) pursuant to an Asset Purchase Agreement (the “Separ Asset Purchase Agreement,” and together with the Reverso Asset Purchase Agreement, the “Purchase Agreements”) by and among Separ America, the Seller, the seller parties named therein and the Seller Parties’ representative named therein. Upon the closing of the Transaction, the assets were transferred and assigned to Separ America in exchange for approximately $1.5 million in cash, subject to customary post-closing adjustments.

Note 19 - Subsequent Events

12 Months Ended

Dec. 31, 2021

Effective January 10, 2022, Crawford REV Acquisition Company LLC (name later changed to Reverso Pumps LLC or “Reverso Pumps”), a Delaware limited liability company and indirect wholly-owned subsidiary of Crawford United Corporation (the “Company”), completed the acquisition (the “Reverso Transaction”) of substantially all the assets of Reverso Pumps, Inc., a Florida corporation and developer, designer, manufacturer, seller and distributor of oil change systems, fuel and oil transfer pumps, fuel primers, fuel polishing systems and engine flushing systems (“Reverso”), pursuant to an Asset Purchase Agreement (the “Reverso Asset Purchase Agreement”) entered into and effective January 10, 2022 by and among Reverso Pumps, the Seller, the seller parties named therein and the Seller Parties’ representatives named therein. Upon the closing of the Transaction, the assets were transferred and assigned to Reverso Pumps in exchange for approximately $2.5 million in cash, subject to customary post-closing adjustments.

Additionally, effective on January 10, 2022, Crawford SEP Acquisition Company LLC (name later changed to Separ America LLC or “Separ America”), a Delaware limited liability company and indirect wholly-owned subsidiary of the Company, completed the acquisition (the “Separ Transaction,” and with the Reverso Transaction, the “Transactions”) of substantially all the assets of Separ of the Americas, LLC, a Florida limited liability company and developer, designer, manufacturer, seller and distributor of oil change systems, fuel and oil transfer pumps, fuel primers, fuel polishing systems and engine flushing systems (“Separ”) pursuant to an Asset Purchase Agreement (the “Separ Asset Purchase Agreement,” and together with the Reverso Asset Purchase Agreement, the “Purchase Agreements”) by and among Separ America, the Seller, the seller parties named therein and the Seller Parties’ representative named therein. Upon the closing of the Transaction, the assets were transferred and assigned to Separ America in exchange for approximately $1.5 million in cash, subject to customary post-closing adjustments.