CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Assets
Cash and cash equivalents	$ 6.0	$ 6.9
Accounts receivable, net	16.0	41.5
Contract assets	1.1	1.2
Inventory	2.0	3.8
Prepaid expenses	1.8	5.3
Total current assets	26.9	58.7
Property and equipment, net	206.6	218.9
Intangible assets, net	8.9	9.3
Operating lease, right-of-use obligations	5.3	6.5
Other assets	0.4	0.1
Total assets	248.1	293.5
Liabilities and Stockholders' Equity
Accounts payable	5.1	13.8
Accrued expenses	8.0	18.4
Finance lease obligations, current portion	4.0	5.1
Long-term debt, current portion	10.0	15.8
Other current liabilities	1.2	2.0
Total current liabilities	28.3	55.1
Operating leases, right-of-use obligations	4.2	4.5
Finance lease obligations	2.3	3.6
Long-term debt, net	16.8	26.6
Other long-term liabilities	1.3	0.7
Total liabilities	52.9	90.5
Commitments and contingencies (Note 12)
Stockholders' equity
Preferred stock, $0.01 per share; 50,000,000 shares authorized; no shares issued or outstanding as of June 30, 2020 and December 31, 2019	0.0	0.0
Less: Class A Common Stock held in treasury, at cost (551,827 shares as of June 30, 2020 and 113,937 as of December 31, 2019)	(3.8)	(0.7)
Accumulated deficit	(11.5)	(8.1)
Additional paid-in capital	121.0	121.8
Total controlling stockholders' equity	105.9	113.2
Noncontrolling interest	89.3	89.8
Total stockholders' equity	195.2	203.0
Total liabilities and stockholders' equity	248.1	293.5
Class A Common Stock
Stockholders' equity
Common stock A and B	0.1	0.1
Class B Common Stock
Stockholders' equity
Common stock A and B	$ 0.1	$ 0.1