Debt (Details) (USD $)	Jun. 30, 2014	Dec. 31, 2013
Debt Instrument [Line Items]
Other Long-term Debt	$ 630,000
Debt	134,017,000	136,767,000
Agribusiness term loan
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.75%
Line of credit, amount outstanding	80,550,000	83,533,000
Agribusiness working capital debt
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Line of credit, amount outstanding	4,350,000	4,750,000
Other agribusiness debt
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.99%
Line of credit, amount outstanding	144,000	159,000
Swiss debt \| 3.7% Loan Due in 2014
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.70%
Line of credit, amount outstanding		14,012,000
Swiss debt \| 3.8% Loan Due in 2014
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.80%
Line of credit, amount outstanding		3,363,000
Swiss debt \| 2.3% Loan Due in 2014
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	2.30%
Line of credit, amount outstanding	1,485,000
Mortgage debt \| 3.9% to 4.75% Loan Due Through 2014
Debt Instrument [Line Items]
Mortgages	37,643,000	17,307,000
Mortgage debt \| 5% to 5.5% Loan Due from 2014 to 2016
Debt Instrument [Line Items]
Mortgages	7,611,000	11,491,000
Mortgage debt \| 6% to 6.5% Loan Due Through 2036
Debt Instrument [Line Items]
Mortgages		548,000
Mortgage debt \| 10% Loan Due Through 2017
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	10.00%
Mortgages	1,604,000	1,604,000
Other Debt Obligations
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.00%
Real Estate Operations
Debt Instrument [Line Items]
Unused borrowing capacity	33,600,000
Agribusiness Operations
Debt Instrument [Line Items]
Unused borrowing capacity	$ 22,700,000
Minimum \| Mortgage debt \| 3.9% to 4.75% Loan Due Through 2014
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.90%
Minimum \| Mortgage debt \| 5% to 5.5% Loan Due from 2014 to 2016
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.00%
Minimum \| Mortgage debt \| 6% to 6.5% Loan Due Through 2036
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.00%
Maximum \| Mortgage debt \| 3.9% to 4.75% Loan Due Through 2014
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.75%
Maximum \| Mortgage debt \| 5% to 5.5% Loan Due from 2014 to 2016
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.50%
Maximum \| Mortgage debt \| 6% to 6.5% Loan Due Through 2036
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	6.50%
June 30, 2014 \| Line of Credit
Debt Instrument [Line Items]
Debt service coverage ratio covenant (ratio), minimum	1.00
Debt service coverage ratio covenant (ratio), minimum going forward	1.25

Debt Instrument, Covenant Terms, Debt Service Coverage Ratio, Maximum

No definition available.

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- Definition

Debt Instrument, Covenant Terms, Debt Service Coverage Ratio, Minimum Going Forward

+ References

No definition available.

+ Details

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(a)(1))

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- Definition

Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22(b))

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 22

-Subparagraph b

-Article 5

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- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

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- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

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-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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- Definition

Including both current and noncurrent portions, carrying amount as of the balance sheet date of other forms of debt not elsewhere specified in the taxonomy with initial maturities beyond one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.22)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

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- Definition

Carrying value as of the balance sheet date, including the current and noncurrent portions, of collateralized debt obligations (with maturities initially due after one year or beyond the operating cycle, if longer). Such obligations include mortgage loans, chattel loans, and any other borrowings secured by assets of the borrower.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.16)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 16

-Article 9

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 19, 20, 22

-Article 5

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.7-03.16)

-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

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