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Loans and Allowance for Losses and Concentrations of Credit Risk - Allowance for Losses by Impairment Method and Commodity (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | $ 6,031,565 | $ 5,649,604 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 107,739 | 75,695 |  |
Financing Receivable, Gross | [1],[2] | 6,139,304 | 5,725,299 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 5,143 | 4,713 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 2,292 | 1,850 |  |
Financing Receivable, Allowance for Credit Losses |  | 7,435 | 6,563 | $ 10,127 | $ 13,334
Total (release of)/provision for losses |  | 1,002 | 208 | (3,166) |
Financing Receivable, Allowance for Credit Losses, Write-downs |  | (130) | (3,772) | (86) |
Crops [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 3,357,301 | 3,224,911 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 53,197 | 18,740 |  |
Financing Receivable, Gross | [1] | 3,410,498 | 3,243,651 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 2,420 | 2,315 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 945 | 476 |  |
Financing Receivable, Allowance for Credit Losses |  | 3,365 | 2,791 | 2,519 |
Total (release of)/provision for losses |  | 574 | 272 |  |
Financing Receivable, Allowance for Credit Losses, Write-downs |  | 0 | 0 |  |
Permanent Plantings [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 1,006,935 | 917,127 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 30,505 | 24,284 |  |
Financing Receivable, Gross | [1] | 1,037,440 | 941,411 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 933 | 571 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 790 | 360 |  |
Financing Receivable, Allowance for Credit Losses |  | 1,723 | 931 | 2,159 |
Total (release of)/provision for losses |  | 792 | (1,228) |  |
Financing Receivable, Allowance for Credit Losses, Write-downs |  | 0 | 0 |  |
Livestock [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 1,290,332 | 1,221,983 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 15,512 | 14,798 |  |
Financing Receivable, Gross | [1] | 1,305,844 | 1,236,781 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 976 | 994 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 399 | 787 |  |
Financing Receivable, Allowance for Credit Losses |  | 1,375 | 1,781 | 1,423 |
Total (release of)/provision for losses |  | (406) | 358 |  |
Financing Receivable, Allowance for Credit Losses, Write-downs |  | 0 | 0 |  |
Part-Time Farm [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 315,549 | 203,090 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 8,525 | 8,035 |  |
Financing Receivable, Gross | [1] | 324,074 | 211,125 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 247 | 181 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 158 | 227 |  |
Financing Receivable, Allowance for Credit Losses |  | 405 | 408 | 467 |
Total (release of)/provision for losses |  | 127 | 52 |  |
Financing Receivable, Allowance for Credit Losses, Write-downs |  | (130) | (111) |  |
Agriculture Storage and Processing [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 48,051 | 72,152 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 0 | 9,838 |  |
Financing Receivable, Gross | [1] | 48,051 | 81,990 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 533 | 649 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 0 | 0 |  |
Financing Receivable, Allowance for Credit Losses |  | 533 | 649 | 3,552 |
Total (release of)/provision for losses |  | (116) | 758 |  |
Financing Receivable, Allowance for Credit Losses, Write-downs |  | 0 | (3,661) |  |
Other Commodity [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 13,397 | 10,341 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 0 | 0 |  |
Financing Receivable, Gross | [1] | 13,397 | 10,341 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 34 | 3 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 0 | 0 |  |
Financing Receivable, Allowance for Credit Losses |  | 34 | 3 | 7 |
Total (release of)/provision for losses |  | 31 | (4) |  |
Financing Receivable, Allowance for Credit Losses, Write-downs |  | 0 | 0 |  |
On-balance sheet [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 3,426,768 | 2,900,868 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 87,686 | 57,107 |  |
Financing Receivable, Gross | [1] | 3,514,454 | 2,957,975 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 3,630 | 3,387 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 1,785 | 1,093 |  |
Financing Receivable, Allowance for Credit Losses |  | 5,415 | 4,480 |  |
On-balance sheet [Member] | Crops [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 2,115,450 | 1,911,039 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 41,648 | 12,803 |  |
Financing Receivable, Gross | [1] | 2,157,098 | 1,923,842 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 2,000 | 1,968 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 613 | 290 |  |
Financing Receivable, Allowance for Credit Losses |  | 2,613 | 2,258 |  |
On-balance sheet [Member] | Permanent Plantings [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 569,360 | 433,654 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 27,770 | 21,247 |  |
Financing Receivable, Gross | [1] | 597,130 | 454,901 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 652 | 434 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 770 | 218 |  |
Financing Receivable, Allowance for Credit Losses |  | 1,422 | 652 |  |
On-balance sheet [Member] | Livestock [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 537,859 | 444,320 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 10,658 | 5,958 |  |
Financing Receivable, Gross | [1] | 548,517 | 450,278 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 735 | 702 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 270 | 384 |  |
Financing Receivable, Allowance for Credit Losses |  | 1,005 | 1,086 |  |
On-balance sheet [Member] | Part-Time Farm [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 183,660 | 92,712 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 7,610 | 7,261 |  |
Financing Receivable, Gross | [1] | 191,270 | 99,973 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 193 | 116 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 132 | 201 |  |
Financing Receivable, Allowance for Credit Losses |  | 325 | 317 |  |
On-balance sheet [Member] | Agriculture Storage and Processing [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 11,545 | 15,944 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 0 | 9,838 |  |
Financing Receivable, Gross | [1] | 11,545 | 25,782 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 22 | 167 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 0 | 0 |  |
Financing Receivable, Allowance for Credit Losses |  | 22 | 167 |  |
On-balance sheet [Member] | Other Commodity [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 8,894 | 3,199 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 0 | 0 |  |
Financing Receivable, Gross | [1] | 8,894 | 3,199 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 28 | 0 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 0 | 0 |  |
Financing Receivable, Allowance for Credit Losses |  | 28 | 0 |  |
Off-balance sheet [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 2,604,797 | 2,748,736 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 20,053 | 18,588 |  |
Financing Receivable, Gross | [1] | 2,624,850 | 2,767,324 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 1,513 | 1,326 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 507 | 757 |  |
Financing Receivable, Allowance for Credit Losses |  | 2,020 | 2,083 |  |
Off-balance sheet [Member] | Crops [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 1,241,851 | 1,313,872 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 11,549 | 5,937 |  |
Financing Receivable, Gross | [1] | 1,253,400 | 1,319,809 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 420 | 347 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 332 | 186 |  |
Financing Receivable, Allowance for Credit Losses |  | 752 | 533 |  |
Off-balance sheet [Member] | Permanent Plantings [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 437,575 | 483,473 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 2,735 | 3,037 |  |
Financing Receivable, Gross | [1] | 440,310 | 486,510 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 281 | 137 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 20 | 142 |  |
Financing Receivable, Allowance for Credit Losses |  | 301 | 279 |  |
Off-balance sheet [Member] | Livestock [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 752,473 | 777,663 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 4,854 | 8,840 |  |
Financing Receivable, Gross | [1] | 757,327 | 786,503 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 241 | 292 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 129 | 403 |  |
Financing Receivable, Allowance for Credit Losses |  | 370 | 695 |  |
Off-balance sheet [Member] | Part-Time Farm [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 131,889 | 110,378 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 915 | 774 |  |
Financing Receivable, Gross | [1] | 132,804 | 111,152 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 54 | 65 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 26 | 26 |  |
Financing Receivable, Allowance for Credit Losses |  | 80 | 91 |  |
Off-balance sheet [Member] | Agriculture Storage and Processing [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 36,506 | 56,208 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 0 | 0 |  |
Financing Receivable, Gross | [1] | 36,506 | 56,208 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 511 | 482 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 0 | 0 |  |
Financing Receivable, Allowance for Credit Losses |  | 511 | 482 |  |
Off-balance sheet [Member] | Other Commodity [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Collectively Evaluated for Impairment |  | 4,503 | 7,142 |  |
Financing Receivable, Individually Evaluated for Impairment |  | 0 | 0 |  |
Financing Receivable, Gross | [1] | 4,503 | 7,142 |  |
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment |  | 6 | 3 |  |
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment |  | 0 | 0 |  |
Financing Receivable, Allowance for Credit Losses |  | $ 6 | $ 3 |  |
Allowance for Loan and Lease Losses [Member] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Additional Information [Abstract] |  |  |  |  |
Financing Receivable, Allowance for Credit Losses, Write-downs |  |  |  | $ (86) |
[1] | Amounts represent unpaid principal balance of risk-rated loans, which is the basis Farmer Mac uses to analyze its portfolio, and recorded investment of past due loans.
[2] | Geographic regions: Northwest (AK, ID, MT, OR, WA, WY); Southwest (AZ, CA, CO, HI, NM, NV, UT); Mid-North (IA, IL, IN, MI, MN, NE, ND, SD, WI); Mid-South (AR, KS, LA, MO, OK, TX); Northeast (CT, DE, KY, MA, MD, ME, NH, NJ, NY, OH, PA, RI, VA, VT, WV); Southeast (AL, FL, GA, MS, NC, SC, TN).

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- Definition A valuation allowance for financing receivables that are expected to be uncollectible. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953423-111524 + Details
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