Related Party Transactions - AgFirst Farm Credit Bank (Details) - AgFirst Farm Credit Bank [Member] - USD ($)	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Related Party Transaction [Line Items]
Revenue from Related Parties	$ 1,200,000	$ 1,100,000	$ 1,100,000
Accounts Receivable, Related Parties, Current	102,828	103,272
Related Party Transaction, Other Revenues from Transactions with Related Party	$ 0	0	0
Common Class B [Member]
Related Party Transaction [Line Items]
Common Stock Ownership Percentage by a Related Party	16.80%
Guarantee Obligations [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Purchases from Related Party	$ 26,600,000	40,000,000	$ 36,400,000
Related Party Transactions, Outstanding Balance	340,500,000	353,800,000
Performance Guarantee [Member]
Related Party Transaction [Line Items]
Related Party Transactions, Outstanding Balance	$ 8,600,000	$ 11,500,000

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- Definition

Related Party Transactions, Outstanding Balance

+ References

No definition available.

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- Definition

Amount of receivables arising from transactions with related parties due within one year or the normal operating cycle, if longer.

+ References

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Reflects the sum of all other revenue and income realized from sales and other transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party during the period.

+ References

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- Definition

Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

+ References

No definition available.

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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