Other intangible assets (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets		$ 0	$ 0
Amortization expense	448,000	490,000
Ubud Hanging Gardens
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, fair value disclosure	2,815,000
Discontinued operations
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	2,815,000
Discontinued operations | Ubud Hanging Gardens
Finite-Lived Intangible Assets [Line Items]
Amortization expense	54,000	81,000
Continuing operations
Finite-Lived Intangible Assets [Line Items]
Amortization expense	394,000	409,000	413,000
Estimated amortization expense, year ended December 31, 2014	394,000
Estimated amortization expense, year ended December 31, 2015	394,000
Estimated amortization expense, year ended December 31, 2016	394,000
Estimated amortization expense, year ended December 31, 2017	394,000
Estimated amortization expense, year ended December 31, 2018	394,000
Favorable lease assets
Finite-Lived Intangible Assets [Line Items]
Amortization expense	311,000	354,000
Favorable lease assets | Discontinued operations | Ubud Hanging Gardens
Finite-Lived Intangible Assets [Line Items]
Impairment of intangible assets	2,815,000
Fair value measurements, non-recurring | Ubud Hanging Gardens
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, fair value disclosure	0
Fair value measurements, non-recurring | Discontinued operations
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, fair value disclosure	$ 0