CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash Flows from Operating Activities
Net income	$ 2.8	$ 3.6
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	8.9	8.4
Equity based compensation	0.8	0.6
Gain on debt retirement	(2.1)	0.0
Other costs, net	0.1	(0.1)
Changes in operating assets and liabilities
Accounts receivable	(0.7)	(6.4)
Contract assets	(2.5)	(4.5)
Inventory	(0.3)	(1.0)
Prepaid expenses	2.0	1.4
Operating leases, right-of-use assets	0.6
Other assets	(0.4)	0.9
Accounts payable	(1.3)	2.9
Accrued expenses	1.2	3.8
Other long-term liabilities	(0.6)	0.3
Net cash provided by operating activities	8.5	9.9
Cash Flows from Investing Activities
Purchase of property and equipment	(4.7)	(10.8)
Proceeds from disposal of property and equipment	0.1	0.3
Net cash used in investing activities	(4.6)	(10.5)
Cash Flows from Financing Activities
Borrowings under line of credit facility	16.9	12.3
Principal payments on line of credit facility	(5.6)	(5.2)
Principal payments on Encina Master Financing Agreement	(2.5)	(2.3)
Principal payments on ESCO Note Payable	(3.7)	0.0
Principal payments on financing lease obligations	(1.3)	(1.1)
Repurchase of Class A Common Stock	(3.1)	0.0
Shares withheld on equity transactions	(0.1)	0.0
Net cash provided by financing activities	0.6	3.7
Increase in Cash and Cash equivalents	4.5	3.1
Cash and Cash Equivalents, Beginning of Period	6.9	2.6
Cash and Cash Equivalents, End of Period	11.4	5.7
Supplemental Cash Flow Information
Interest paid	1.0	1.4
Supplemental Disclosure of Non-cash Investing and Financing Activities
Capital expenditures	(0.8)	(2.0)
Additions to fixed assets through financing leases	(0.5)	(0.5)
Initial non-cash operating lease right-of-use asset additions	$ 0.0	$ (8.3)