2. Summary of significant accounting policies (Details Narrative) (USD $)	Jun. 30, 2012	Dec. 31, 2011
Summary Of Significant Accounting Policies Details Narrative
Reserved for other receivable bad debt	$ 689,207	$ 695,678
Reserved for accounts receivable bad debt	689,207	695,678
Reserved for loans receivable	1,967,574	1,986,050
Depreciation period minimum	20 years
Depreciation period maximum	26 years
Net property held for rental	47,371,112	49,420,220
Accumulated depreciation of rental properties	24,763,145	23,402,215
Aggregate balance in accounts	$ 6,262,811