Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2018

Summary of Significant Accounting Policies [Abstract]

Estimated Useful Lives of Property and Equipment

Computer equipment	3 – 5 years
Furniture and equipment	5 – 7 years
Transportation equipment	5 years
Computer software	5 – 10 years
Leasehold improvements	Lesser of useful life or lease term, unless
	probability of lease renewal is likely