The following table represents the changes in accumulated other comprehensive income (loss), net of tax, for the three month period ended September 30, 2018 (in thousands):



	Gains and Losses on Cash Flow Hedges			Change in Valuation Allowance			Total
Balance as of June 30, 2018	$	(610	)	$	(192	)	$	(802	)
Amounts reclassified from accumulated other comprehensive loss:
Oil and gas sales	401			—			401
Income tax effect	(96		)	96			—
Net of tax	305			96			401

Net other comprehensive income	305			96			401
Balance as of September 30, 2018	$	(305	)	$	(96	)	$	(401	)

The following table represents the changes in accumulated other comprehensive income (loss), net of tax, for the nine

month period ended September 30, 2018 (in thousands):



	Gains and Losses on Cash Flow Hedges			Change in Valuation Allowance			Total
Balance as of December 31, 2017	$	278		$	—		$	278
Other comprehensive income before reclassifications:
Change in fair value of cash flow derivatives	(990		)	—			(990		)
Income tax effect	238			(238		)	—
Net of tax	(752		)	(238		)	(990		)
Amounts reclassified from accumulated other comprehensive income:
Oil and gas sales	222			—			222
Income tax effect	(53		)	142			89
Net of tax	169			142			311
Net other comprehensive loss	(583		)	(96		)	(679		)
Balance as of September 30, 2018	$	(305	)	$	(96	)	$	(401	)

The following table represents the changes in accumulated other comprehensive income (loss), net of tax, for the three month period ended September 30, 2017 (in thousands):



	Gains and Losses on Cash Flow Hedges			Change in Valuation Allowance		Total
Balance as of June 30, 2017	$	320		$	—	$	320
Other comprehensive income before reclassifications:
Change in fair value of derivatives	591			—		591
Income tax effect	(220		)	—		(220		)
Net of tax	371			—		371
Amounts reclassified from accumulated other comprehensive income:
Oil and gas sales	(618		)	—		(618		)
Income tax effect	230			—		230
Net of tax	(388		)	—		(388		)
Net other comprehensive loss	(17		)	—		(17		)
Balance as of September 30, 2017	$	303		$	—	$	303

The following table represents the changes in accumulated other comprehensive income (loss), net of tax, for the nine month period ended September 30, 2017 (in thousands):



	Gains and Losses on Cash Flow Hedges			Change in Valuation Allowance			Total
Balance as of December 31, 2016	$	(2,983	)	$	(1,767	)	$	(4,750	)
Other comprehensive income before reclassifications:
Change in fair value of derivatives	5,636			—			5,636
Income tax effect	(2,096		)	1,767			(329		)
Net of tax	3,540			1,767			5,307
Amounts reclassified from accumulated other comprehensive income:
Oil and gas sales	(404		)	—			(404		)
Income tax effect	150			—			150
Net of tax	(254		)	—			(254		)
Net other comprehensive loss	3,286			1,767			5,053
Balance as of September 30, 2017	$	303		$	—		$	303