Lease cost:

Amortization of right-of-use assets

$

1,179

$

1,644

$

2,306

$

3,484

Interest on lease obligations

207

199

361

422

Finance lease cost

1,386

1,843

2,667

3,906

Operating lease cost

1,442

1,809

3,274

4,158

Short-term lease cost

2,821

2,547

5,566

3,877

Total lease cost

$

5,649

$

6,199

$

11,507

$

11,941

Cash paid for amounts included in the measurement of lease obligations:

Operating cash flows from finance leases

$

361

$

422

Operating cash flows from operating leases

4,475

6,976

Financing cash flows from finance leases

2,825

4,560

$

7,661

$

11,958

Right-of-use assets obtained in exchange for new finance lease obligations

$

-

$

73

Right-of-use assets obtained in exchange for new operating lease obligations

$

2,117

$

4,063

Right-of-use assets derecognized upon early termination of finance leases

$

8

$

530

Right-of-use assets derecognized upon early termination of operating leases

$

8,222

$

1,768

Weighted-average lease term (years):

Financing leases

4.1

4.5

Operating leases

4.3

4.7

Weighted-average discount rate (percentage):

Financing leases

4.0

%

3.9

%

Operating leases

4.9

%

4.7

%