Notes Payable - Schedule of Promissory Notes Outstanding and Other Notes Payable (Details) (Parenthetical)	6 Months Ended	12 Months Ended
	Jun. 30, 2018	Dec. 31, 2017
Debt instrument, interest rate, stated percentage	12.00%
Vendor Notes [Member] \| Minimum [Member]
Debt instrument, interest rate, stated percentage	0.00%	0.00%
Debt instrument, term	1 month	1 month
Vendor Notes [Member] \| Maximum [Member]
Debt instrument, interest rate, stated percentage	6.00%	6.00%
Debt instrument, term	48 months	48 months
Short-term Notes Payable Bearing Interest [Member] \| Minimum [Member]
Debt instrument, interest rate, stated percentage	4.00%	4.00%
Debt instrument, term	3 months	3 months
Short-term Notes Payable Bearing Interest [Member] \| Maximum [Member]
Debt instrument, interest rate, stated percentage	12.00%	12.00%
Debt instrument, term	36 months	36 months
Obligations under Capital Leases [Member] \| Minimum [Member]
Debt instrument, interest rate, stated percentage	4.10%	4.10%
Debt instrument, term	48 months	48 months
Obligations under Capital Leases [Member] \| Maximum [Member]
Debt instrument, interest rate, stated percentage	8.20%	8.20%
Debt instrument, term	60 months	60 months
Various Equipment Notes [Member] \| Minimum [Member]
Debt instrument, interest rate, stated percentage	2.00%	2.00%
Debt instrument, term	30 months	30 months
Various Equipment Notes [Member] \| Maximum [Member]
Debt instrument, interest rate, stated percentage	41.00%	41.00%
Debt instrument, term	72 months	72 months