Quarterly report pursuant to Section 13 or 15(d)

Leases (Details)

v3.19.1
Leases (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 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 ) 7 months 6 days          
ROU Asset $ 3,100          
Right-of-Use Asset Amortization 0          
Interest Expense $ 30          
Discount Rate ( as a percent ) 6.10%          
Lease term ( in years ) 3 years 11 months 5 days          
ROU asset $ 1,800          
Operating Lease, Liability 1,857          
Operation Lease Accumulated Amortization 100          
Operating Lease Expense 130 $ 400        
Short-term Lease Expense 300          
Short-term Lease Commitment 0          
Operating Lease, Payments 100          
Finance Lease, Principal Payments 100          
Present value of future lease payments (lease obligation) 3,042          
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 $ 40          
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