CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Cash Flows from Operating Activities
Net loss	$ (27.3)	$ (5.0)	$ (6.7)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	17.8	6.6	2.1
Bad debt expense	0.3	0.6	0.7
Issuance of Class A and Class B Common Stock for settlement of interest on related party debt	5.2
Equity based compensation	1.2	0.5	0.1
Impairment of goodwill	0.0	0.0	1.6
Loss on sale of property, plant and equipment		(0.1)
Changes in operating assets and liabilities, net of effect of acquisitions
Accounts receivable	(12.4)	(8.7)	(2.1)
Unbilled revenue	(4.7)	(1.3)
Prepaid expenses and other current assets	(4.0)	1.5	0.1
Other assets	(0.7)		0.1
Accounts payable	2.6	(1.2)	(1.6)
Accounts payable - related party	(2.4)	2.4
Accrued expenses	7.4	(0.5)	0.8
Other long-term liabilities	(0.3)		(0.3)
Net cash used in operating activities	(17.3)	(5.2)	(5.2)
Cash Flows from Investing Activities
Purchase of property, plant and equipment	(21.7)	(11.2)	(26.0)
Sale of property, plant and equipment	0.5	2.1	0.5
Acquisitions, net of cash received	(47.7)	(16.3)
Net cash used in investing activities	(68.9)	(25.4)	(25.5)
Cash Flows from Financing Activities
Payments on long-term debt	(12.0)	(2.6)
Borrowings on long-term debt	0.1	4.5	10.0
Borrowings on related party debt	21.0
Principal payments on capital lease obligations	(1.9)	(0.5)	(0.3)
Proceeds from the Offering, net of underwriters' expense of $4.2 million	80.8
Payments incurred for the Offering	(3.9)
Contributions from parent	4.0	34.1	19.6
Distributions to parent		(3.0)
Restricted cash	1.8	(1.4)	(0.4)
Net cash provided by financing activities	89.9	31.1	28.9
Increase in Cash and Cash equivalents	3.7	0.5	(1.8)
Cash and Cash Equivalents, Beginning of Year	1.6	1.1	2.9
Cash and Cash Equivalents, End of Year	5.3	1.6	1.1
Supplemental Cash Flows Information
Interest paid	(0.5)	(0.5)	(0.3)
Supplemental Disclosure of Noncash Investing and Financing Activity
Non-cash capital expenditures	(24.5)	(1.6)	$ (0.8)
Non-cash additions to fixed assets through capital lease financing	(10.7)	(0.3)
Contribution of Magna		12.7
Equity issued for Bayou acquisition		$ (33.0)
Issuance of Class A and Class B Common Stock for payment of related party debt	(21.0)
Issuance of Class A Common Stock for acquisition	(5.0)
Long-term obligation to related party	(3.0)
Seller's Notes for payment for acquisition	$ (7.0)