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Real Estate and Intangible Assets - Summary Information of Farms (Details) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 USD ($) a farm | Mar. 31, 2018 a farm | Dec. 31, 2018 USD ($) a farm
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 86 | 75 |
Total Acres | a | 73,900 | 63,351 |
Farm Acres | a | 58,344 |  |
Net Cost Basis | $ | $ 544,001 |  |
Encumbrances | $ | $ 336,217 |  |
California |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 33 |  | 29
Total Acres | a | 10,147 |  | 8,241
Farm Acres | a | 9,336 |  |
Net Cost Basis | $ | $ 249,319 |  |
Encumbrances | $ | $ 166,109 |  |
Florida |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 22 |  | 16
Total Acres | a | 17,184 |  | 11,006
Farm Acres | a | 12,981 |  |
Net Cost Basis | $ | $ 154,297 |  |
Encumbrances | $ | $ 96,772 |  |
Arizona |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 6 |  | 6
Total Acres | a | 6,280 |  | 6,280
Farm Acres | a | 5,228 |  |
Net Cost Basis | $ | $ 55,340 |  |
Encumbrances | $ | $ 22,008 |  |
Colorado |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 10 |  | 10
Total Acres | a | 31,448 |  | 31,450
Farm Acres | a | 24,513 |  |
Net Cost Basis | $ | $ 41,790 |  |
Encumbrances | $ | $ 25,046 |  |
Nebraska |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 3 |  | 2
Total Acres | a | 3,254 |  | 2,559
Farm Acres | a | 2,701 |  |
Net Cost Basis | $ | $ 12,847 |  |
Encumbrances | $ | $ 8,490 |  |
Washington |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 1 |  | 1
Total Acres | a | 746 |  | 746
Farm Acres | a | 417 |  |
Net Cost Basis | $ | $ 8,709 |  |
Encumbrances | $ | $ 5,190 |  |
Texas |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 1 |  | 0
Total Acres | a | 3,667 |  | 0
Farm Acres | a | 2,219 |  |
Net Cost Basis | $ | $ 8,393 |  |
Encumbrances | $ | $ 5,280 |  |
Oregon |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 3 |  | 4
Total Acres | a | 418 |  | 2,313
Farm Acres | a | 363 |  |
Net Cost Basis | $ | $ 6,003 |  |
Encumbrances | $ | $ 3,312 |  |
Michigan |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 5 |  | 5
Total Acres | a | 446 |  | 446
Farm Acres | a | 291 |  |
Net Cost Basis | $ | $ 4,990 |  |
Encumbrances | $ | $ 2,740 |  |
North Carolina |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 2 |  | 2
Total Acres | a | 310 |  | 310
Farm Acres | a | 295 |  |
Net Cost Basis | $ | $ 2,313 |  |
Encumbrances | $ | $ 1,270 |  |
State of Arizona | Arizona |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 2 |  |
Total Acres | a | 1,368 |  |
Farm Acres | a | 1,221 |  |
Net Cost Basis | $ | $ 2,500 |  |
Mortgage notes and bonds payable |  |  |
Real Estate Properties [Line Items] |  |  |
Debt issuance costs – notes and bonds payable | $ | $ 2,282 |  | $ 2,338

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