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MARKETABLE SECURITIES
 3 Months Ended
Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]  
MARKETABLE SECURITIES
MARKETABLE SECURITIES
 
March 31, 2019
(in thousands)
Amortized Cost
 
Unrealized Gains
 
Unrealized Losses
 
Fair Value
Municipal bonds
$
42,693

 
$
86

 
$
(20
)
 
$
42,759

Corporate bonds
48,966

 
142

 
(63
)
 
49,045

 
$
91,659

 
$
228

 
$
(83
)
 
$
91,804

 
December 31, 2018
(in thousands)
Amortized Cost
 
Unrealized Gains
 
Unrealized Losses
 
Fair Value
Municipal bonds
$
44,802

 
$
13

 
$
(110
)
 
$
44,705

Corporate bonds
48,499

 
23

 
(226
)
 
48,296

 
$
93,301

 
$
36

 
$
(336
)
 
$
93,001


As of March 31, 2019, the Company did not hold any investments with unrealized losses that are considered to be other-than-temporary.
As of March 31, 2019, maturities of marketable securities ranged from April 2019 to August 2022, with a weighted-average remaining maturity of approximately 1.4 years.