10. Derivative Instruments (Details-Reconciliation of derivatives) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative assets	$ 1,154,400	$ 3,571,803
Noncurrent derivative assets	0	4,007,942
Net amount of assets on the balance sheet	1,154,400	7,579,745
Derivative liabilities	0	0
Noncurrent derivative liabilities		0
Net amounts of liabilities on the balance sheet	0	0
Total derivative liabilities, net	$ 1,154,400	$ 7,579,745