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Real Estate and Intangible Assets - Summary Information of Farms (Detail) $ in Thousands | 9 Months Ended |
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Sep. 30, 2017 USD ($) a option farm | Sep. 30, 2016 USD ($) a option farm | Aug. 31, 2017 a
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 72 | 56 |
Total Acres | a | 61,794 | 33,800 |
Farm Acres (in acres) | a | 49,667 |  |
Net Cost Basis | $ 447,332 |  |
Encumbrances/Net Long-term Debt Issued | $ 297,236 |  |
2017 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 14 |  |
Total Acres | a | 11,202 |  |
Total Purchase Price | $ 121,847 |  |
Acquisition Costs | 436 |  |
Annualized straight-line cash rent | 6,692 |  |
Encumbrances/Net Long-term Debt Issued | $ 71,668 |  |
2016 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm |  | 13 |
Total Acres | a |  | 16,988 |
Total Purchase Price |  | $ 81,558 |
Acquisition Costs |  | 413 |
Annualized straight-line cash rent |  | 4,332 |
Encumbrances/Net Long-term Debt Issued |  | $ 28,953 |
California |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 27 | 21 |
Total Acres | a | 7,921 | 6,516 | 361
Farm Acres (in acres) | a | 7,156 |  |
Net Cost Basis | $ 202,181 |  |
Encumbrances/Net Long-term Debt Issued | $ 145,819 |  |
Fresno, CA | Phelps Avenue | 2017 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Acquisition Date | Jul. 17, 2017 |  |
No. of Farms | farm | 4 |  |
Total Acres | a | 847 |  |
Renewal Options, Number of Renewal Options | option | 1 |  |
Renewal Options, Lease Term | 5 years |  |
Total Purchase Price | $ 13,603 |  |
Acquisition Costs | 43 |  |
Annualized straight-line cash rent | 681 |  |
Encumbrances/Net Long-term Debt Issued | $ 8,162 |  |
Fresno, CA | Phelps Avenue | 2017 New Real Estate Activity | Weighted average |  |  |
Real Estate Properties [Line Items] |  |  |
Lease Term | 10 years 3 months 15 days |  |
Fresno, CA | Calaveras Avenue | 2016 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Acquisition Date |  | Apr. 05, 2016 |
No. of Farms | farm |  | 1 |
Total Acres | a |  | 453 |
Lease Term |  | 10 years |
Renewal Options, Number of Renewal Options | option |  | 1 |
Renewal Options, Lease Term |  | 5 years |
Total Purchase Price |  | $ 15,470 |
Acquisition Costs |  | 39 |
Annualized straight-line cash rent |  | 774 |
Encumbrances/Net Long-term Debt Issued |  | $ 9,282 |
Santa Barbara, CA | Cat Canyon Road(7) | 2017 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Acquisition Date | Aug. 30, 2017 |  |
No. of Farms | farm | 1 |  |
Total Acres | a | 361 |  |
Renewal Options, Number of Renewal Options | option | 2 |  |
Renewal Options, Lease Term | 5 years |  |
Total Purchase Price | $ 5,375 |  |
Acquisition Costs | 67 |  |
Annualized straight-line cash rent | 322 |  |
Encumbrances/Net Long-term Debt Issued | $ 3,225 |  |
Santa Barbara, CA | Cat Canyon Road(7) | 2017 New Real Estate Activity | Weighted average |  |  |
Real Estate Properties [Line Items] |  |  |
Lease Term | 9 years 9 months 4 days |  |
Stanislaus, CA | Diego Ranch | 2016 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Acquisition Date |  | Sep. 14, 2016 |
No. of Farms | farm |  | 1 |
Total Acres | a |  | 1,357 |
Lease Term |  | 3 years |
Total Purchase Price |  | $ 13,997 |
Acquisition Costs |  | 64 |
Annualized straight-line cash rent |  | 621 |
Encumbrances/Net Long-term Debt Issued |  | $ 0 |
Stanislaus, CA | Diego Ranch Lease Arrangement 1 | 2016 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Renewal Options, Number of Renewal Options | option |  | 3 |
Renewal Options, Lease Term |  | 5 years |
Stanislaus, CA | Diego Ranch Lease Arrangement 2 | 2016 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Renewal Options, Number of Renewal Options | option |  | 1 |
Renewal Options, Lease Term |  | 3 years |
Merced, CA | Nevada Ranch | 2016 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Acquisition Date |  | Sep. 14, 2016 |
No. of Farms | farm |  | 1 |
Total Acres | a |  | 1,130 |
Lease Term |  | 3 years |
Total Purchase Price |  | $ 13,232 |
Acquisition Costs |  | 42 |
Annualized straight-line cash rent |  | 574 |
Encumbrances/Net Long-term Debt Issued |  | $ 0 |
Merced, CA | Nevada Ranch, Lease Arrangement 1 | 2016 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Renewal Options, Number of Renewal Options | option |  | 3 |
Renewal Options, Lease Term |  | 5 years |
Merced, CA | Nevada Ranch, Lease Arrangement 2 | 2016 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Renewal Options, Number of Renewal Options | option |  | 1 |
Renewal Options, Lease Term |  | 3 years |
Florida |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 17 | 15 |
Total Acres | a | 11,225 | 5,567 | 1,910
Farm Acres (in acres) | a | 9,027 |  |
Net Cost Basis | $ 117,549 |  |
Encumbrances/Net Long-term Debt Issued | $ 76,072 |  |
Martin, FL | Citrus Boulevard | 2017 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Acquisition Date | Jan. 12, 2017 |  |
No. of Farms | farm | 1 |  |
Total Acres | a | 3,748 |  |
Lease Term | 7 years |  |
Renewal Options, Number of Renewal Options | option | 3 |  |
Renewal Options, Lease Term | 5 years |  |
Total Purchase Price | $ 54,000 |  |
Acquisition Costs | 80 |  |
Annualized straight-line cash rent | 2,926 |  |
Encumbrances/Net Long-term Debt Issued | $ 32,400 |  |
Okeechobee, FL | Parrot Avenue(6) | 2017 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Acquisition Date | Aug. 09, 2017 |  |
No. of Farms | farm | 1 |  |
Total Acres | a | 1,910 |  |
Renewal Options, Number of Renewal Options | option | 0 |  |
Total Purchase Price | $ 9,700 |  |
Acquisition Costs | 64 |  |
Annualized straight-line cash rent | 488 |  |
Encumbrances/Net Long-term Debt Issued | $ 5,820 |  |
Okeechobee, FL | Parrot Avenue(6) | 2017 New Real Estate Activity | Weighted average |  |  |
Real Estate Properties [Line Items] |  |  |
Lease Term | 6 months 17 days |  |
St. Lucie, FL | Orange Avenue | 2016 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Acquisition Date |  | Jul. 01, 2016 |
No. of Farms | farm |  | 1 |
Total Acres | a |  | 401 |
Lease Term |  | 7 years |
Renewal Options, Number of Renewal Options | option |  | 2 |
Renewal Options, Lease Term |  | 7 years |
Total Purchase Price |  | $ 5,100 |
Acquisition Costs |  | 38 |
Annualized straight-line cash rent |  | 291 |
Encumbrances/Net Long-term Debt Issued |  | $ 3,120 |
Hillsborough, FL | Lithia Road | 2016 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Acquisition Date |  | Aug. 11, 2016 |
No. of Farms | farm |  | 1 |
Total Acres | a |  | 72 |
Lease Term |  | 5 years |
Renewal Options, Number of Renewal Options | option |  | 0 |
Total Purchase Price |  | $ 1,700 |
Acquisition Costs |  | 38 |
Annualized straight-line cash rent |  | 97 |
Encumbrances/Net Long-term Debt Issued |  | $ 1,020 |
Colorado |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 9 | 8 |
Total Acres | a | 30,170 | 13,575 |
Farm Acres (in acres) | a | 23,257 |  |
Net Cost Basis | $ 41,812 |  |
Encumbrances/Net Long-term Debt Issued | $ 24,686 |  |
Saguache, CO | Gunbarrel Road | 2016 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Acquisition Date |  | Mar. 03, 2016 |
No. of Farms | farm |  | 3 |
Total Acres | a |  | 6,191 |
Lease Term |  | 5 years |
Renewal Options, Number of Renewal Options | option |  | 1 |
Renewal Options, Lease Term |  | 5 years |
Total Purchase Price |  | $ 25,736 |
Acquisition Costs |  | 119 |
Annualized straight-line cash rent |  | 1,591 |
Encumbrances/Net Long-term Debt Issued |  | $ 15,531 |
Baca, CO | Baca County | 2016 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Acquisition Date |  | Sep. 01, 2016 |
No. of Farms | farm |  | 5 |
Total Acres | a |  | 7,384 |
Lease Term |  | 4 years |
Renewal Options, Number of Renewal Options | option |  | 1 |
Renewal Options, Lease Term |  | 5 years |
Total Purchase Price |  | $ 6,323 |
Acquisition Costs |  | 73 |
Annualized straight-line cash rent |  | 384 |
Encumbrances/Net Long-term Debt Issued |  | $ 0 |
Arizona |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 6 | 2 |
Total Acres | a | 6,280 | 3,000 |
Farm Acres (in acres) | a | 5,228 |  |
Net Cost Basis | $ 40,570 |  |
Encumbrances/Net Long-term Debt Issued | $ 23,166 |  |
Yuma, AZ | Spot Road | 2017 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Acquisition Date | Jun. 01, 2017 |  |
No. of Farms | farm | 4 |  |
Total Acres | a | 3,280 |  |
Total Purchase Price | $ 27,500 |  |
Acquisition Costs | 88 |  |
Annualized straight-line cash rent | 1,673 |  |
Encumbrances/Net Long-term Debt Issued | $ 15,300 |  |
Yuma, AZ | Spot Road | 2017 New Real Estate Activity | Weighted average |  |  |
Real Estate Properties [Line Items] |  |  |
Lease Term | 8 years 6 months 19 days |  |
Yuma, AZ | Spot Road Property 1 | 2017 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Renewal Options, Number of Renewal Options | option | 1 |  |
Renewal Options, Lease Term | 10 years |  |
Yuma, AZ | Spot Road Property 2 | 2017 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Renewal Options, Number of Renewal Options | option | 1 |  |
Renewal Options, Lease Term | 2 years |  |
Oregon |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 4 | 4 |
Total Acres | a | 2,313 | 2,313 |
Farm Acres (in acres) | a | 2,003 |  |
Net Cost Basis | $ 19,755 |  |
Encumbrances/Net Long-term Debt Issued | $ 12,528 |  |
Nebraska |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 2 | 2 |
Total Acres | a | 2,559 | 2,559 |
Farm Acres (in acres) | a | 2,101 |  |
Net Cost Basis | $ 10,667 |  |
Encumbrances/Net Long-term Debt Issued | $ 6,602 |  |
Washington |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 1 | 0 |
Total Acres | a | 746 | 0 |
Farm Acres (in acres) | a | 417 |  |
Net Cost Basis | $ 9,525 |  |
Encumbrances/Net Long-term Debt Issued | $ 5,460 |  |
Walla Walla, WA | Oasis Road | 2017 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Acquisition Date | Sep. 08, 2017 |  |
No. of Farms | farm | 1 |  |
Total Acres | a | 746 |  |
Renewal Options, Number of Renewal Options | option | 0 |  |
Total Purchase Price | $ 9,500 |  |
Acquisition Costs | 45 |  |
Annualized straight-line cash rent | 480 |  |
Encumbrances/Net Long-term Debt Issued | $ 5,460 |  |
Walla Walla, WA | Oasis Road | 2017 New Real Estate Activity | Weighted average |  |  |
Real Estate Properties [Line Items] |  |  |
Lease Term | 6 years 3 months 7 days |  |
Michigan |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 4 | 4 |
Total Acres | a | 270 | 270 |
Farm Acres (in acres) | a | 183 |  |
Net Cost Basis | $ 2,965 |  |
Encumbrances/Net Long-term Debt Issued | $ 1,602 |  |
North Carolina |  |  |
Real Estate Properties [Line Items] |  |  |
No. of Farms | farm | 2 | 0 |
Total Acres | a | 310 | 0 |
Farm Acres (in acres) | a | 295 |  |
Net Cost Basis | $ 2,308 |  |
Encumbrances/Net Long-term Debt Issued | $ 1,301 |  |
Bladen, NC | Poplar Street | 2017 New Real Estate Activity |  |  |
Real Estate Properties [Line Items] |  |  |
Acquisition Date | Jun. 02, 2017 |  |
No. of Farms | farm | 2 |  |
Total Acres | a | 310 |  |
Renewal Options, Number of Renewal Options | option | 1 |  |
Renewal Options, Lease Term | 5 years |  |
Total Purchase Price | $ 2,169 |  |
Acquisition Costs | 49 |  |
Annualized straight-line cash rent | 122 |  |
Encumbrances/Net Long-term Debt Issued | $ 1,301 |  |
Bladen, NC | Poplar Street | 2017 New Real Estate Activity | Weighted average |  |  |
Real Estate Properties [Line Items] |  |  |
Lease Term | 9 years 6 months 29 days |  |

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