Lease cost:

Amortization of right-of-use assets

$

852

$

838

$

2,658

$

3,144

Interest on lease obligations

95

65

311

426

Finance lease cost

947

903

2,969

3,570

Operating lease cost

1,140

1,240

3,354

4,514

Short-term lease cost

1,497

1,593

8,279

7,159

Total lease cost

$

3,584

$

3,736

$

14,602

$

15,243

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

Operating cash flows from finance leases

$

311

$

426

Operating cash flows from operating leases

3,881

5,330

Financing cash flows from finance leases

3,036

3,800

$

7,228

$

9,556

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

$

-

$

-

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

$

3,005

$

2,389

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

$

2

$

20

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

$

487

$

8,096

Weighted-average lease term (years):

Finance leases

3.4

4.0

Operating leases

3.9

4.2

Weighted-average discount rate (percentage):

Finance leases

4.3

%

4.1

%

Operating leases

5.1

%

5.0

%