Related-Party Transactions (Details) (USD $)				12 Months Ended					12 Months Ended					0 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Aug. 06, 2012 Officer	Dec. 31, 2012 Chief Executive Officer	Dec. 31, 2011 Chief Executive Officer	Dec. 31, 2011 Non-executive Chairman	Dec. 31, 2011 Northstar	Dec. 31, 2012 Northstar	Dec. 31, 2011 Chief Financial Officer	Dec. 31, 2012 Chief Financial Officer	Dec. 31, 2012 Director	Dec. 31, 2011 Director	Dec. 31, 2012 Vice President	Aug. 13, 2010 Synthonics	Dec. 31, 2011 Agribusiness Operations	Aug. 06, 2012 Maximum Officer	Aug. 06, 2012 Minimum Officer
Related Party Transaction [Line Items]
Common stock owned by officer, shares				53,996	19,940					1,375	2,644	2,644	30,000
Severance agreement, number of years of base salary			2 years
Severance agreement, number of years of COBRA expense reimbursement																1 year
Severance agreement, term			2 years
Severance agreement, automatic extension, term			2 years
Severance agreement, cancellation of extension, advance notice required																	90 days
Base annual salary					$ 1,991,751				$ 500,000
Incentive compensation threshold, increase in per-share book value as % of annual total return of S&P 500				80.00%
Incentive compensation award, % of increase in per-share book value, used to compute award				7.50%
Threshold of total return on certain investments over which consulting compensation is applicable						20.00%
Consulting services expense						155,000
Loan made to related party							565,000
Ownership percentage by noncontrolling owners															12.00%
Loan receivable, interest rate								10.00%
Loans receivable, related parties, maximum allowable							750,000
Deferred compensation	22,607,000	36,315,000
Deferred compensation arrangements, fair value of company stock allocated	1,800,000
Amount invested in related party														$ 2,100,000
Convertible preferred shares received from related party in exchange for investment														273,229