AgReserves Sale (Details) (USD $)	1 Months Ended	3 Months Ended		0 Months Ended
	Apr. 30, 2014	Mar. 31, 2015	Mar. 31, 2014 acre	Mar. 05, 2014	Dec. 31, 2014	Dec. 31, 2008	Apr. 02, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Timberland Acreage Sales			380,000
Other operating and corporate expenses		$ 7,117,000	$ 8,507,000
Investments held by special purpose entities		209,412,000		203,500,000	209,857,000
Debt instrument, face amount	180,000,000
Debt interest rate	4.75%
Proceeds from (repayments of) accounts receivable securitization	165,000,000
Cost of monetization	15,000,000
Retained interest promissory note receivable		20,000,000				15,200,000
Senior Notes Held By Special Purpose Entity		177,366,000			177,341,000
Interest income from investments in special purpose entities		2,003,000	0
Interest expense in special purpose entity		2,188,000	0
Carrying Value | Level 3
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Senior Notes Held By Special Purpose Entity		177,366,000			177,341,000
Northwest Florida Timber Finance, LLC | Notes Receivable
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Issue price of senior secured notes	98.483%
Special Purpose Entities
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held by special purpose entities		211,900,000
Liabilities held by special purpose entities		178,100,000
U.S. treasury securities		9,300,000
Cash		300,000
Debt issuance cost		1,400,000
Unamortized discount (premium), net		2,600,000
Deposit liabilities, accrued interest		712,000			2,852,000
Held-To-Maturity Security, Term		15 years
U.S. Treasury securities maturing within one year		800,000
U.S. Treasury securities maturing after one year through five years		3,700,000
U.S. Treasury securities maturing after five years through ten years		3,100,000
U.S. Treasury securities maturing after ten years		1,700,000
Special Purpose Entities | Notes Receivable
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Debt interest rate							4.006%
Buyer Special Purpose Entity
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Time deposits		200,000,000
Accrued investment income receivable		1,000,000
AgReserves Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proposed land sale, purchase price				562,000,000
Sale of real estate				511,100,000
Other operating and corporate expenses				1,200,000
Proceeds from sale of real estate				358,500,000
Disposal group consideration, notes receivable				$ 200,000,000
Timber Notes Receivable Maturity Period				15 years