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Accumulated Other Comprehensive Income (Loss)
 12 Months Ended
Dec. 31, 2018
Equity [Abstract]  
Accumulated Other Comprehensive Income (Loss)
21. Accumulated Other Comprehensive Income (Loss)

Components of comprehensive income (loss) are net income (loss) and all changes in equity during a period except those resulting from transactions with owners. Our accumulated other comprehensive income (loss) consists of changes in the fair value of our interest rate swap derivative instruments, net of tax, which are designated as cash flow hedges, amortization of terminated interest rate swaps and adjustments related to changes in our ownership of the Partnership.

The following table presents the changes in accumulated other comprehensive income (loss) of our derivative cash flow hedges, net of tax and excluding noncontrolling interest, during the years ended December 31, 2018, 2017 and 2016 (in thousands):

 
Year Ended December 31,
 
2018
 
2017
 
2016
Beginning accumulated other comprehensive income (loss)
$
1,197

 
$
(1,678
)
 
$
(1,570
)
Gain (loss) recognized in other comprehensive income (loss), net of tax provision (benefit) of $169, $793 and $(629), respectively
(659
)
 
1,910

 
(1,457
)
(Gain) loss reclassified from accumulated other comprehensive income (loss) to interest expense, net of tax provision (benefit) of $185, $(520) and $(726), respectively (1)
(435
)
 
965

 
1,349

Merger-related adjustments (2)
5,670

 
—

 
—

Other comprehensive income (loss) attributable to Archrock stockholders
4,576

 
2,875

 
(108
)
Ending accumulated other comprehensive income (loss)
$
5,773

 
$
1,197

 
$
(1,678
)
——————
(1) 
Included stranded tax effects resulting from the TCJA of $0.3 million reclassified to accumulated deficit during the year ended December 31, 2018. See Note 2 (“Recent Accounting Developments”) for further detail.
(2) 
Pursuant to the Merger, we reclassified a gain of $5.7 million from noncontrolling interest to accumulated other comprehensive income (loss) related to the fair value of our derivative instruments that was previously attributed to public ownership of the Partnership.

See Note 12 (“Derivatives”) for further details on our interest rate swap derivative instruments.