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Financial Instruments (Tables)
 12 Months Ended
Dec. 31, 2018
Derivative Instrument Detail [Abstract]  
Estimated Fair Value of Financial Instruments

Estimated fair values of our financial instruments as of December 31 are as follows: 

 

 

 

2018

 

 

2017

 

(Dollars in thousands)

 

Carrying

Amount

 

 

Fair

Value

 

 

Carrying

Amount

 

 

Fair

Value

 

Cash, cash equivalents and restricted cash (Level 1)

 

$

79,441

 

 

$

79,441

 

 

$

120,457

 

 

$

120,457

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Derivative assets related to interest rate swaps (Level 2)

 

$

1,510

 

 

$

1,510

 

 

$

1,169

 

 

$

1,169

 

Derivative liabilities related to interest rate swaps (Level 2)

 

$

(2,888

)

 

$

(2,888

)

 

$

—

 

 

$

—

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Long-term debt, including current portion (Level 2):

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Term loans

 

$

(539,169

)

 

$

(539,037

)

 

$

(343,500

)

 

$

(345,222

)

Senior notes

 

 

(149,786

)

 

 

(154,328

)

 

 

(149,528

)

 

 

(161,063

)

Revenue bonds

 

 

(94,735

)

 

 

(93,144

)

 

 

(65,735

)

 

 

(63,967

)

Medium-term notes

 

 

(3,000

)

 

 

(3,419

)

 

 

(17,250

)

 

 

(18,227

)

Total long-term debt1

 

$

(786,690

)

 

$

(789,928

)

 

$

(576,013

)

 

$

(588,479

)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Company owned life insurance (COLI) (Level 3)

 

$

3,104

 

 

$

3,104

 

 

$

1,996

 

 

$

1,996

 

 

1

The carrying amount of long-term debt includes principal and unamortized discounts. Long-term debt also includes the $29.0 million of revenue bonds for the MDF facility which are classified as held for sale at December 31, 2018. See Note 3 Assets and Liabilities Held for Sale for further information.