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Fair Value Measurements (Tables)
 12 Months Ended
Dec. 31, 2017
Fair Value Measurements [Abstract]  
Financial Assets and Liabilities Measured on a Recurring Basis at Fair Value

The following table summarizes our financial assets and liabilities measured on a recurring basis at fair value at December 31, 2017 and 2016 by respective level of the fair value hierarchy:







 

 

 

 



 

 

 

 



Level 1

Level 2

Level 3

Total



(in thousands)

 

 

 

December 31, 2017

 

 

 

 

Assets:

 

 

 

 

Marketable securities

$       1,907

$            -

$            -

$       1,907

Marketable securities - restricted

 2,148 

 -

 -

 2,148 

Interest rate swaps

 -

 -

 543  543 



$       4,055

$            -

$        543

$       4,598



 

 

 

 

December 31, 2016

 

 

 

 

Assets:

 

 

 

 

Marketable securities

$       1,763

$            -

$            -

$       1,763

Marketable securities - restricted

 2,036 

 -

 -

 2,036 

Interest rate swaps

 -

 -

 296  296 



$       3,799

$            -

$        296

$       4,095

Liabilities:

 

 

 

 

Interest rate swaps

$              -

$            -

$        476

$          476



Changes in Fair Value of Interest Rate Swaps

The table below highlights the change in fair value of the interest rate swaps:







 

 



 

 



 

Fair Value Measurements Using Significant Unobservable Inputs (Level 3)



 

Interest Rate Swaps



 

(in thousands)

Ending balance, December 31, 2015

 

$                                (817)

Change in estimated fair value

 

 637 

Ending balance, December 31, 2016

 

 (180)

Change in estimated fair value

 

 723 

Ending balance, December 31, 2017

 

$                                 543