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EMPLOYEE RELATED LIABILITIES (Tables)
 12 Months Ended
Dec. 31, 2017
Postretirement Medical Plan [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Schedule of Net Periodic Benefit Cost
The components of the net periodic benefit cost and other amounts recognized in other comprehensive income (loss) for post-retirement medical plan expense are as follows:

   
Year ended December 31,
  
   
2017
    
2016
    
2015
  
Net periodic benefit cost:
                  
Service cost
  
$
9
    
$
12
    
$
29
  
Interest cost
    
69
      
85
      
126
  
Amortization of prior service costs
    
--
      
(12
)
    
(973
)
Amortization of net (gain) or loss
    
(361
)
    
(333
)
    
(115
)
Total net periodic benefit cost
  
$
(283
)
  
$
(248
)
  
$
(933
)
Other changes in plan assets and benefits obligations recognized in other
comprehensive income:
  
Prior service cost for the period
  
$
--
    
$
--
    
$
--
  
Net (gain) or loss for the period
    
317
      
(316
)
    
(1,333
)
Amortization of prior service costs
    
--
      
12
      
973
  
Amortization of net gain or (loss)
    
361
      
333
      
115
  
Total recognized in other comprehensive income (expense)
  
$
678
    
$
29
    
$
(245
)
Total recognized in net periodic benefit cost and other comprehensive income
  
$
395
    
$
(219
)
  
$
(1,178
)

Weighted average assumptions used:
        
Discount rate
    
4.50
%
    
4.80
%
    
4.30
%
Expected return on plan assets
    
N/A
      
N/A
      
N/A
  
Rate of compensation increases
    
N/A
      
N/A
      
N/A
  
Assumed health care cost trend rates:
          
Health care cost trend rate assumed for current year (Pre-65/Post-65)
    
7.20%/10.00
%
    
6.75%/10.00
%
    
7.00%/20.00
%
Ultimate rate (Pre-65/Post-65)
    
4.50%/4.50
%
    
4.50%/5.00
%
    
4.50%/5.00
%
Year the ultimate rate is reached (Pre-65/Post-65)
    
2025/2025
      
2025/2022
      
2025/2022
  
Measurement date
  
December 31, 2017
    
December 31, 2016
    
December 31, 2015
Schedule of Impact of One-Percentage-Point Change in Assumed Health Care Cost
Impact of one-percentage point change in assumed health care cost trend rates as of December 31, 2017:

   
Increase
    
Decrease
  
Effect on service cost and interest cost
  
$
4
    
$
(3
)
Effect on post-retirement benefit obligation
  
$
78
    
$
(61
)
Schedule of changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status
The components of the change in benefit obligation, change in plan assets and funded status for post-retirement medical plan are as follows:

   
Year ended December 31,
  
   
2017
    
2016
    
2015
  
Change in medical plan related benefit obligation:
                  
Medical plan related benefit  obligation at beginning of period
  
$
1,550
    
$
1,781
    
$
2,977
  
Service cost
    
9
      
12
      
29
  
Interest cost
    
69
      
85
      
126
  
Benefits paid
    
(9
)
    
(12
)
    
(18
)
Change in  medical plan provisions
    
--
      
--
      
--
  
Actuarial loss (gain)
    
317
      
(316
)
    
(1,333
)
Benefit  medical plan related  obligation end of period
  
$
1,936
    
$
1,550
    
$
1,781
  
Change in plan assets:
                        
Fair value of plan assets at beginning of period
  
$
--
    
$
--
    
$
--
  
Employer contribution
    
9
      
12
      
18
  
Benefits paid
    
(9
)
    
(12
)
    
(18
)
Fair value of plan assets at end of period
  
$
--
    
$
--
    
$
--
  
Medical plan related net funding
  
$
(1,936
)
  
$
(1,550
)
  
$
(1,781
)
 
   
As of December 31,
  
   
2017
    
2016
    
2015
  
Amounts recognized in statement of financial position:
  
Current liabilities
  
$
(58
)
  
$
(37
)
  
$
(40
)
Non-current liabilities
    
(1,878
)
    
(1,513
)
    
(1,741
)
Net amount recognized
  
$
(1,936
)
  
$
(1,550
)
  
$
(1,781
)
Weighted average assumptions used:
  
Discount rate
    
3.80
%
    
4.50
%
    
4.80
%
Rate of compensation increases
    
N/A
      
N/A
      
N/A
  
Assumed health care cost trend rates:
  
Health care cost trend rate assumed for next year (pre 65/ post 65)
    
8.30%/11.10
%
    
7.20%/10.00
%
    
6.75%/10.00
%
Ultimate rate (pre 65/ post 65)
    
4.50%/4.50
%
    
4.50%/4.50
%
    
4.50%/5.00
%
Year the ultimate rate is reached (pre 65/ post 65)
    
2027/2027
      
2025/2025
      
2025/2022
Schedule of Future Benefit Payments
The following benefit payments are expected to be paid in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter:
 
Fiscal Year
  
Other Benefits
  
2018
  
$
59
  
2019
    
73
  
2020
    
71
  
2021
    
74
  
2022
    
77
  
2023-2027
  
$
404
Pension Plan [Member]  
Defined Benefit Plan Disclosure [Line Items]  
Schedule of Net Periodic Benefit Cost
The components of the change in benefit obligation, the change in plan assets and funded status for Jazz’s pension plan are as follows:
 
   
Year ended December 31,
  
   
2017
    
2016
    
2015
  
Net periodic benefit cost:
                  
Interest cost
  
$
831
    
$
841
    
$
798
  
Expected return on plan assets
    
(1,236
)
    
(1,154
)
    
(1,130
)
Amortization of prior service costs
    
3
      
3
      
3
  
Amortization of net (gain) or loss
    
55
      
34
      
31
  
Total net periodic benefit cost
  
$
(347
)
  
$
(276
)
  
$
(298
)
Schedule of Amounts Recognized in Other Comprehensive Income
Other changes in plan assets and benefits obligations recognized in other comprehensive income:
  
Prior service cost for the period
  
$
--
    
$
--
    
$
--
  
Net (gain) or loss for the period
    
(1,303
)
    
736
      
6
  
Amortization of prior service costs
    
(3
)
    
(3
)
    
(3
)
Amortization of net gain or (loss)
    
(55
)
    
(34
)
    
(31
)
Total recognized in other comprehensive income (expense)
  
$
(1,361
)
  
$
699
    
$
(28
)
Total recognized in net periodic benefit cost and other comprehensive income (expense)
  
$
(1,708
)
  
$
423
    
$
(326
)
Weighted average assumptions used:
                  
Discount rate
    
4.30
%
    
4.60
%
    
4.20
%
Expected return on plan assets
    
6.20
%
    
6.20
%
    
6.20
%
Rate of compensation increases
    
N/A
      
N/A
      
N/A
  
Schedule of Estimated Amounts in Accumulated Other Comprehensive Income to be Recognized over the Next Fiscal Year
   
Year ended December 31,
  
   
2017
    
2016
    
2015
  
Estimated amounts that will be amortized from accumulated other
  comprehensive income in the next fiscal year ending :
  
Prior service cost
    
3
      
3
      
3
  
Net actuarial (gain) or loss
  
$
0
    
$
54
    
$
33
Schedule of changes in Projected Benefit Obligations, Fair Value of Plan Assets, and Funded Status
The components of the change in benefit obligation, change in plan assets and funded status for Jazz’s pension plan are as follows:
 
   
Year ended December 31,
  
   
2017
    
2016
    
2015
  
Change in benefit obligation:
                  
Benefit obligation at beginning of period
  
$
19,672
    
$
18,605
    
$
19,304
  
Interest cost
    
831
      
841
      
798
  
Benefits paid
    
(548
)
    
(496
)
    
(451
)
Change in plan provisions
    
--
      
--
      
--
  
Actuarial loss (gain)
    
674
      
722
      
(1,046
)
Benefit obligation end of period
  
$
20,629
    
$
19,672
    
$
18,605
  
Change in plan assets:
                        
Fair value of plan assets at beginning of period
  
$
19,871
    
$
18,526
    
$
18,134
  
Actual return on plan assets
    
3,212
      
1,141
      
78
  
Employer contribution
    
700
      
700
      
765
  
Benefits paid
    
(548
)
    
(496
)
    
(451
)
Fair value of plan assets at end of period
  
$
23,235
    
$
19,871
    
$
18,526
  
Funded status
  
$
2,606
    
$
199
    
$
(79
)
Amounts recognized in statement of financial position:
  
Non-current assets
  
$
2,606
    
$
199
    
$
--
  
Non-current liabilities
    
--
      
--
      
(79
)
Net amount recognized
  
$
2,606
    
$
199
    
$
(79
)
Weighted average assumptions used:
  
Discount rate
    
3.70
%
    
4.30
%
    
4.60
%
Rate of compensation increases
    
N/A
      
N/A
      
N/A
Schedule of Future Benefit Payments
The following benefit payments are expected to be paid in each of the next five fiscal years and in the aggregate for the five fiscal years thereafter:
 
Fiscal Year
  
Other Benefits
  
2018
  
$
764
  
2019
    
850
  
2020
    
935
  
2021
    
998
  
2022
    
1,058
  
2023-2027
  
$
5,865
  
 
Schedule of Weighted Average Asset Allocations
Jazz’s pension plan weighted average asset allocations on December 31, 2017, by asset category are as follows:

Asset Category
  
December 31, 2017
    
Target allocation 2018
  
Equity securities
    
61
%
    
60
%
Debt securities
    
39
%
    
40
%
Total
    
100
%
    
100
%
Schedule of Assets Measured at Fair Value on a Recurring Basis
The plan’s assets measured at fair value on a recurring basis consisted of the following as of December 31, 2017:

   
Level 1
    
Level 2
    
Level 3
  
Investments in mutual funds
  
$
--
    
$
23,235
    
$
--
  
Total plan assets at fair value
  
$
--
    
$
23,235
    
$
--
  

The plan’s assets measured at fair value on a recurring basis consisted of the following as of as of December 31, 2016:

   
Level 1
    
Level 2
    
Level 3
  
Investments in mutual funds
  
$
-
    
$
19,871
    
$
-
  
Total plan assets at fair value
  
$
-
    
$
19,871
    
$
-