Leases - Narrative (Details) - USD ($)	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019	Jan. 01, 2019	Dec. 31, 2018
Lessee Lease Description [Line Items]
Operating lease right-of-use asset	$ 5,934,791	$ 5,934,791		$ 0
Operating lease liability	$ 5,915,311	$ 5,915,311
Remaining term of lease	4 years 7 months 6 days	4 years 7 months 6 days
Weighted-average discount rate	4.25%	4.25%
Operating lease cost	$ 800,000	$ 2,000,000
Electrical construction operation’s equipment
Lessee Lease Description [Line Items]
Remaining term of lease	7 years	7 years
leases with residual value guarantees	$ 0	$ 0
ASU 2016-02
Lessee Lease Description [Line Items]
Operating lease right-of-use asset			$ 4,300,000
Operating lease liability			$ 4,300,000