Quarterly report pursuant to Section 13 or 15(d)

Cover
- Cover
Financial Statements
Notes to Financial Statements
Accounting Policies
- Basis of Presentation - (Policies)
Notes Tables
Notes Details

Leases - Narrative (Details)

v3.20.1

Leases - Narrative (Details) - USD ($) $ in Thousands		6 Months Ended
Leases - Narrative (Details) - USD ($) $ in Thousands	Jul. 01, 2019	Jun. 30, 2019	Jun. 30, 2018	Jan. 31, 2019	Jan. 01, 2019	Oct. 01, 2018	Mar. 31, 2013
Finance Lease, Cost [Abstract]
Discount Rate ( as a percent )		4.30%
Lease Term ( in years )		3 months 18 days
ROU Asset		$ 3,100
Right-of-Use Asset Amortization		0
Interest Expense		$ 70
Discount Rate ( as a percent )		6.20%
Lease term ( in years )		3 years 11 months 5 days
ROU asset		$ 1,800
Operating Lease, Liability		1,755
Operation Lease Accumulated Amortization		200
Operating Lease Expense		300	$ 800
Short-term Lease Expense		600
Short-term Lease Commitment		8,300
Operating Lease, Payments		300
Measurement Of Finance Lease		200
Finance Lease, Principal Payments		123	0
Present value of future lease payments (lease obligation)		2,980
Real Estate Lease
Finance Lease, Cost [Abstract]
Lease term ( in years )					4 years
Operating Lease, Term of Contract ( In years )							10 years
Operating Lease, Renewal Term ( in years )							10 years
Crew Camp Lease
Finance Lease, Cost [Abstract]
ROU asset		500
Operating Lease, Liability		500
Operating Lease, Cost		$ 80
Operating Lease, Term of Contract ( In years )				4 years
Ground Lease [Member]
Finance Lease, Cost [Abstract]
Lease Term ( in years )		7 months 6 days
Lessee, Finance Lease, Term of Contract						10 years
Accounting Standards Update 2016-02
Finance Lease, Cost [Abstract]
Operating Lease, Liability					$ 2,000
Present value of future lease payments (lease obligation)					$ 3,100
Subsequent event
Finance Lease, Cost [Abstract]
Disposal Group, Including Discontinued Operation, Gross Profit (Loss)	$ 5,000
Real Estate Lease
Finance Lease, Cost [Abstract]
Operating Lease, Payments		$ 200	$ 200

- Definition

Measurement Of Finance Lease

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- Definition

Operation Lease, Accumulated Amortization

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- Definition

Amount of gross profit attributable to disposal group, including, but not limited to, discontinued operation.

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- Definition

Amount of interest expense on finance lease liability.

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Present value of lessee's discounted obligation for lease payments from finance lease.

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Amount of cash outflow for principal payment on finance lease.

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Amount of lessee's right to use underlying asset under finance lease.

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Weighted average discount rate for finance lease calculated at point in time.

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Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Amount of operating lease expense. Excludes sublease income.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of short-term lease commitment.

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Amount of short-term lease cost, excluding expense for lease with term of one month or less.

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