Notes and advances payable (Details) - USD ($)	Dec. 31, 2016	Dec. 31, 2015
Officers, directors and affiliates:
Note payable	$ 30,546	$ 43,803
Collateralized note payable	120,728	120,728
Total officers, directors and affiliates	151,274	164,531
Less: Current portion of officers, directors, and affiliates	134,839	13,152
Long-term portion of officers, directors, and affiliates	16,435	151,379
Unrelated parties:
Total unrelated parties	1,273,678	1,163,372
Less: Current portion of unrelated parties	240,750	989,853
Long-term portion of unrelated parties	1,032,928	173,519
Notes Payable [Member]
Unrelated parties:
Total unrelated parties	100,000	100,000
Notes Payable One [Member]
Unrelated parties:
Total unrelated parties	22,737	32,607
Notes Payable Two [Member]
Unrelated parties:
Total unrelated parties	150,000	150,000
Notes Payable Three[Member]
Unrelated parties:
Total unrelated parties	13,566	19,660
Notes Payable Four [Member]
Unrelated parties:
Total unrelated parties	523,000	616,105
Notes Payable Five [Member]
Unrelated parties:
Total unrelated parties	62,000	62,000
Notes Payable Six [Member]
Unrelated parties:
Total unrelated parties	183,000	183,000
Notes Payable Seven [Member]
Unrelated parties:
Total unrelated parties	97,300	0
Notes Payable Eight [Member]
Unrelated parties:
Total unrelated parties	98,200	0
Notes Payable Nine [Member]
Unrelated parties:
Total unrelated parties	$ 23,875	$ 0