Joint Venture	12 Months Ended
	Dec. 31, 2020
Equity Method Investments and Joint Ventures [Abstract]
Joint Venture	Joint VentureOn May 12, 2020, a subsidiary of IDEX entered into a joint venture agreement with a third party to form a limited liability company (the “Joint Venture”) that will manufacture and sell high performance elastomer seals for the oil and gas industry to customers within the Kingdom of Saudi Arabia as well as export these high performance elastomer seals outside of the Kingdom of Saudi Arabia. The Joint Venture will be headquartered in Damman, Saudi Arabia and will operate in our Sealing Solutions platform within the Health & Science Technologies segment. In the fourth quarter of 2020, the Company contributed $147 thousand and owns 55% of the share capital while the third party partner contributed $120 thousand and owns 45% of the share capital. As of December 31, 2020, the Joint Venture had not yet begun its operations. Since we control the entity, we have consolidated the Joint Venture and recorded a noncontrolling interest in our consolidated financial statements.