17. Commitments and contingencies (Details) (USD $)	Dec. 31, 2012
Contractual Obligation
Total	$ 7,959,830
2013	7,376,923
2014	339,958
2015	242,949
2015 and Later
Notes payable
Contractual Obligation
Total	4,004,103
2013	4,004,103
2014
2015
2015 and Later
Rent obligations
Contractual Obligation
Total	1,260,645
2013	677,738
2014	339,958
2015	242,949
2015 and Later
Deferred Salary
Contractual Obligation
Total	1,152,933
2013	1,152,933
2014
2015
2015 and Later
Accrued interest
Contractual Obligation
Total	947,100
2013	947,100
2014
2015
2015 and Later
Employee Contracts: Salary
Contractual Obligation
Total	363,750
2013	363,750
2014
2015
2015 and Later
Employee Contracts: Other
Contractual Obligation
Total	231,299
2013	231,299
2014
2015
2015 and Later