Business Combinations and Asset Acquisition (Details) $ in Thousands						3 Months Ended			9 Months Ended		10 Months Ended
	Apr. 09, 2018 USD ($)	Jan. 31, 2018 USD ($)	Dec. 01, 2017 USD ($)	Apr. 04, 2017 USD ($)	Jul. 31, 2015 USD ($) shares	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($) country shares	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) country shares	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) country shares	Nov. 07, 2017 country
Class of Warrant or Right [Line Items]
Increase (decrease) in fair value of contingent consideration							$ 307	$ (1,424)	$ 543	$ (2,420)
Settlement of Dow Liabilities, net of income tax										$ 55,089
Number of operating countries | country							45		45		45
Dow
Class of Warrant or Right [Line Items]
Number of shares authorized to be repurchased (in shares) | shares							5,070,358		5,070,358		5,070,358
Percentage of number of shares outstanding									10.00%
Stock repurchase period									18 months
Verigo
Class of Warrant or Right [Line Items]
Payments to acquire software	$ 1,800
Amendment agreement | Dow
Class of Warrant or Right [Line Items]
Increase (decrease) in liabilities				$ 20,000
Cash paid to related party		$ 10,000		10,000
Increase (decrease) in fair value of contingent consideration				(95,100)
Settlement of Dow liabilities, increase in deferred income taxes				(40,000)
Settlement of Dow Liabilities, net of income tax				$ 55,100
Tax receivables agreement (TRA) | Dow
Class of Warrant or Right [Line Items]
Rate of tax receivable agreement				50.00%	85.00%
AgroFresh Inc.
Class of Warrant or Right [Line Items]
Cash consideration					$ 635,000
Tecnidex Fruit Protection, S.A.U.
Class of Warrant or Right [Line Items]
Cash consideration			$ 20,000				$ 22,300				$ 25,000
Percentage of voting interests acquired			75.00%
Common Stock | AgroFresh Inc.
Class of Warrant or Right [Line Items]
Number of shares issued as consideration (in shares) | shares					17,500,000
Level 3 | Tecnidex Fruit Protection, S.A.U.
Class of Warrant or Right [Line Items]
Contingent consideration			$ 700
Adjustment to purchase price allocation									$ 2,800
Tecnidex Fruit Protection, S.A.U. | Tecnidex Fruit Protection, S.A.U.
Class of Warrant or Right [Line Items]
Number of operating countries | country												18
Plan | Tecnidex Fruit Protection, S.A.U.
Class of Warrant or Right [Line Items]
Cash consideration						$ 2,300