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Note 9 - Leases (Tables)
6 Months Ended
Jun. 30, 2019
Notes Tables  
Lease, Cost [Table Text Block]
   

Three Months Ended

June 30, 2019

   

Six Months Ended

June 30, 2019

 
                 

Operating lease cost

  $ 2,352     $ 4,951  

Finance lease cost:

               

Amortization of ROU assets

    704       1,122  

Interest on lease liabilities

    561       1,142  

Total lease cost

  $ 3,617     $ 7,215  
Schedule of Components of Lease Assets and Liabilities [Table Text Block]
   

June 30, 2019

 

Operating Leases

       

Operating lease ROU assets (1)

  $ 39,799  
         

Operating lease liabilities - current (2)

  $ 7,753  

Operating lease liabilities - noncurrent (3)

    33,012  

Total operating lease liabilities

  $ 40,765  
         

Finance Leases

       

Finance lease ROU assets, gross

  $ 29,221  

Accumulated depreciation - finance lease ROU assets

    (2,786 )

Finance lease ROU assets, net (4)

  $ 26,435  
         

Finance lease liabilities - current (5)

  $ 1,648  

Finance lease liabilities - noncurrent (6)

    24,363  

Total finance lease liabilities

  $ 26,011  
Schedule of Leases Cash Flow Information [Table Text Block]
   

Three Months Ended

June 30, 2019

   

Six Months Ended

June 30, 2019

 

Cash paid for amounts included in the measurement of lease liabilities

               

Operating cash flows from operating leases

  $ 2,768     $ 5,386  

Operating cash flows from finance leases

    466       922  

Financing cash flows from finance leases

    827       1,356  
                 

ROU assets obtained in exchange for lease liabilities

               

Operating leases

    2,396       2,793  

Finance leases

    995       7,971  
Lease, Term and Discount Rate [Table Text Block]
   

June 30, 2019

 

Weighted average remaining lease term (in years)

       

Operating Leases

    7.13  

Finance Leases

    14.32  
         

Weighted average discount rate

       

Operating Leases

    5.50 %

Finance Leases

    7.83 %
Operating and Finance Lease, Liability, Maturity [Table Text Block]
   

As of June 30, 2019

 
   

Finance

Leases

   

Operating

Leases

 

Remainder of 2019

  $ 1,806     $ 4,978  

2020

    3,498       8,861  

2021

    3,122       6,904  

2022

    2,792       5,373  

2023

    2,659       4,624  

After 2023

    32,026       18,591  

Total minimum lease payments

    45,903       49,331  

Interest

    (19,892 )     (8,566 )

Present value of minimum lease payments

  $ 26,011     $ 40,765  
Schedule of Future Minimum Rental Payments for Finance and Operating Leases [Table Text Block]
   

As of December 31, 2018

 
   

Capital

Leases

   

Operating

Leases

 

2019

  $ 2,166     $ 8,914  

2020

    2,477       7,575  

2021

    2,053       6,379  

2022

    1,995       4,955  

2023

    1,889       4,482  

After 2023

    18,108       18,614  

Total minimum lease payments

    28,688     $ 50,919  

Interest

    (8,517 )        

Present value of minimum lease payments

  $ 20,171