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BASIS OF PREPARATION AND SIGNIFICANT ACCOUNTING POLICIES (Tables)
12 Months Ended
Dec. 31, 2018
Accounting Policies [Abstract]  
Schedule of Price Risk Derivatives
The realized and unrealized gain on oil derivative instrument is as follows:

(in thousands of $)
Year Ended 
 December 31,
 
2018

2017

Realized gain on oil derivative instrument
26,737


Unrealized (loss) gain on oil derivative instrument
(9,970
)
15,100

 
16,767

15,100

Schedule of New Accounting Pronouncements and Changes in Accounting Principles
The change in presentation for the years ended December 31, 2017 and 2016 are as follows:

(in thousands of $)
As previously reported
Adjustments (decrease) increase
As adjusted
December 31, 2016
 
 
 
Administrative expenses
45,960

(8,658
)
37,302

Project development expenses

8,658

8,658

 
 
 
 
December 31, 2017
 
 
 
Administrative expenses
50,334

(12,303
)
38,031

Project development expenses

12,303

12,303

The adoption changed how restricted cash is reported in the consolidated statements of cash flows as follows for the twelve months ended December 31, 2017 and 2016:
(in thousands of $)
Cash flow line item
As previously reported
Adjustments decrease
As adjusted
December 31, 2016
 
 
 
OPERATING ACTIVITIES
Restricted cash and short-term deposits
47,834

(47,834
)

INVESTING ACTIVITIES
Restricted cash and short-term deposits
22,928

(22,928
)

FINANCING ACTIVITIES
Restricted cash and short-term deposits
(74,608
)
74,608


 
 
 
 
 
As a result of the above changes, the following subtotals as retrospectively restated are as follows:
Net (decrease) increase in cash, cash equivalents and restricted cash
118,955

3,846

122,801

Cash, cash equivalents and restricted cash at beginning of period
105,235

412,182

517,417

Cash, cash equivalents and restricted cash at end of period
224,190

416,028

640,218

 
 
 
 
 
December 31, 2017
 
 
 
OPERATING ACTIVITIES
Restricted cash and short-term deposits
57,110

(57,110
)

INVESTING ACTIVITIES
Restricted cash and short-term deposits
11,239

(11,239
)

FINANCING ACTIVITIES
Restricted cash and short-term deposits
(50,136
)
50,136


 
 
 
 
 
As a result of the above changes, the following subtotals as retrospectively restated are as follows:
Net (decrease) increase in cash, cash equivalents and restricted cash
(9,328
)
(18,213
)
(27,541
)
Cash, cash equivalents and restricted cash at beginning of period
224,190

416,028

640,218

Cash, cash equivalents and restricted cash at end of period
214,862

397,815

612,677

Schedule of useful lives applied in depreciation
Useful lives applied in depreciation are as follows:

Vessels (excluding converted FSRUs and FLNG)
40 years
Vessels - converted FSRUs

20 years from conversion date

Vessels - FLNG
30 years from conversion date

Drydocking expenditure
5 years
Deferred drydocking expenditure - FLNG
20 years
Mooring equipment - FLNG
8 years
Office equipment and fittings
3 to 6 years
Schedule of Error Corrections and Prior Period Adjustments
The change in presentation for the years ended December 31, 2017 and 2016 are as follows:

(in thousands of $)
As previously reported
Adjustments (decrease) increase
As adjusted
December 31, 2016
 
 
 
Change in fair value of derivative instruments

(26,644
)
(26,644
)
Change in assets and liabilities:
 
 
 
    Other current and non-current assets
14,924

(309
)
14,615

    Other current and non-current liabilities
(17,273
)
26,953

9,680

 
 
 
 
December 31, 2017
 
 
 
Change in fair value of derivative instruments

(24,498
)
(24,498
)
Change in assets and liabilities:
 
 
 
    Other current and non-current assets
(102,453
)
21,556

(80,897
)
    Change in fair value of oil derivative instrument


(15,100
)
(15,100
)
    Other current and non-current liabilities
81,844

18,042

99,886

The change in presentation for the years ended December 31, 2017 and 2016 are as follows:

(in thousands of $)
As previously reported
Adjustments decrease
As adjusted
December 31, 2016
 
 
 
Gains (losses) on derivative instruments

16,491

16,491

Other financial items, net
8,691

(16,491
)
(7,800
)
 
 
 
 
December 31, 2017
 
 
 
Gains (losses) on derivative instruments

20,696

20,696

Other financial items, net
20,627

(20,696
)
(69
)