Related Party Transactions - AgFirst Farm Credit Bank (Details) - AgFirst Farm Credit Bank [Member] - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Related Party Transaction [Line Items] | |||
| Revenue from Related Parties | $ 0.4 | $ 0.6 | $ 0.7 |
| Accounts Receivable, Related Parties, Current | 0.1 | 0.1 | |
| Related Party Transaction, Other Revenues from Transactions with Related Party | $ 0.1 | 0.1 | 0.5 |
| Common Class B, Voting [Member] | |||
| Related Party Transaction [Line Items] | |||
| Common Stock Ownership Percentage by a Related Party | 16.80% | ||
| Performance Guarantee [Member] | |||
| Related Party Transaction [Line Items] | |||
| Related Party Transactions, Outstanding Balance | $ 24.6 | 28.9 | |
| Guarantee Obligations [Member] | |||
| Related Party Transaction [Line Items] | |||
| Related Party Transaction, Purchases from Related Party | 28.5 | 19.7 | $ 8.1 |
| Related Party Transactions, Outstanding Balance | $ 112.7 | $ 112.8 | |