Segment Reporting (Details) Segment Information by Major Operating Segment (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Total revenues (losses)	$ 354,896	$ 344,829	$ 150,081
Interest	5,764	6,881	4,153
Impairment loss on intangible and long-lived assets	13,084	1,410
Depreciation and amortization	3,233	2,765	1,967
Income (loss) from continuing operations before income taxes and equity in loss of unconsolidated affiliate	(61,043)	(25,432)	(29,578)
Equity in loss of unconsolidated affiliate	(2,076)	(565)
Total assets	804,444	762,552	667,174
Capital expenditure	11,657	4,724	32,918
Water Resources and Water Storage Operations
Segment Reporting Information [Line Items]
Total revenues (losses)	1,580	25,862	3,096
Interest	18	206	54
Impairment loss on intangible and long-lived assets	5,791	993
Depreciation and amortization	1,098	1,197	1,325
Income (loss) from continuing operations before income taxes and equity in loss of unconsolidated affiliate	(12,584)	(867)	(6,279)
Total assets	186,294	193,105	210,189
Capital expenditure	230	271	547
Real Estate Operations
Segment Reporting Information [Line Items]
Total revenues (losses)	191,440	93,272	59,066
Interest			1,017
Impairment loss on intangible and long-lived assets	2,865	417
Depreciation and amortization	669	271	147
Income (loss) from continuing operations before income taxes and equity in loss of unconsolidated affiliate	(10,531)	(4,442)	2,487
Total assets	384,855	276,954	145,978
Capital expenditure	1,004	650	505
Agribusiness Operations
Segment Reporting Information [Line Items]
Total revenues (losses)	162,408	184,648	85,305
Interest	5,536	5,746	2,654
Depreciation and amortization	179	147	284
Income (loss) from continuing operations before income taxes and equity in loss of unconsolidated affiliate	(14,074)	(23,265)	(12,654)
Total assets	152,554	155,005	165,961
Capital expenditure	6,387	1,156	31,579
Corporate
Segment Reporting Information [Line Items]
Total revenues (losses)	(532)	27,398	2,614
Interest	210	629	428
Impairment loss on intangible and long-lived assets	4,428
Depreciation and amortization	1,287	1,086	211
Income (loss) from continuing operations before income taxes and equity in loss of unconsolidated affiliate	(23,854)	8,423	(13,132)
Equity in loss of unconsolidated affiliate	(2,076)	(565)
Total assets	80,741	137,488	145,046
Capital expenditure	4,036	2,647	287
Enterprise Software
Segment Reporting Information [Line Items]
Total revenues (losses)		13,649
Interest		300
Depreciation and amortization		64
Income (loss) from continuing operations before income taxes and equity in loss of unconsolidated affiliate		$ (5,281)