Operating Leases Operating Leases (Details) - USD ($)	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Operating Leased Assets [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 2,045,000
Operating Leases, Future Minimum Payments, Due in Two Years	1,545,000
Operating Leases, Future Minimum Payments, Due in Three Years	0
Operating Leases, Future Minimum Payments, Due in Four Years	0
Operating Leases, Future Minimum Payments, Due Thereafter	0
Operating Leases, Future Minimum Payments Due	3,590,000
Operating Leases, Rent Expense	1,000,000	$ 3,300,000	$ 8,300,000
Related Party Transaction, Expenses from Transactions with Related Party	8,154,000	53,039,000	49,882,000
Purchase Options, Land		21,600,000	2,800,000
Related Party [Member]
Operating Leased Assets [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	1,838,000
Operating Leases, Future Minimum Payments, Due in Two Years	1,545,000
Operating Leases, Future Minimum Payments, Due in Three Years	0
Operating Leases, Future Minimum Payments, Due in Four Years	0
Operating Leases, Future Minimum Payments, Due Thereafter	0
Operating Leases, Future Minimum Payments Due	3,383,000
Operating Leases, Rent Expense	1,000,000	3,000,000	6,800,000
Equipment Leased to Other Party [Member]
Operating Leased Assets [Line Items]
Operating Leases, Future Minimum Payments, Due in Two Years	0
Operating Leases, Future Minimum Payments, Due in Three Years	0
Operating Leases, Future Minimum Payments, Due in Four Years	0
Operating Leases, Future Minimum Payments, Due Thereafter	0
Terminal Facilities [Member]
Operating Leased Assets [Line Items]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	207,000
Operating Leases, Future Minimum Payments Due	207,000
Terminal Facilities [Member]
Operating Leased Assets [Line Items]
Operating Leases, Rent Expense	2,200,000	3,900,000	4,200,000
Terminal Facilities [Member] | Related Party [Member]
Operating Leased Assets [Line Items]
Operating Leases, Rent Expense	1,849,000	3,408,000	3,930,000
Related Party Transaction, Expenses from Transactions with Related Party	$ 1,900,000	$ 3,600,000	$ 3,900,000