Income Taxes - Deferred Tax and NOL (Details) $ in Millions	12 Months Ended
	Dec. 31, 2017 USD ($)
Deferred income tax assets:
Equity based compensation	$ 0.3
Net operating loss carryforward	6.2
Total non-current deferred income tax asset	6.5
Valuation allowance	(2.3)
Net non-current deferred income tax asset	4.2
Deferred income tax liabilities
Investment in partnership	(4.2)
Net operating loss carryforwards	6.2
Operating loss carryforwards, section 382 limited losses	2.2
Operating loss carryforwards, non-section 382 limited losses	$ 4.0