Income Taxes (Tables)

6 Months Ended

Jun. 30, 2018

Income Taxes [Abstract]

Summary of Income Tax Benefit (Provision)

The following summarizes our income tax benefit (provision) (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Current income tax provision	$	(834)	$	(96)	$	(1,388)	$	(53,989)
Deferred income tax benefit (provision)		5,902		476		7,043		(11,695)
Income tax benefit (provision)	$	5,068	$	380	$	5,655	$	(65,684)

Summary of Uncertain Tax Positions Included in Income Tax Provision

The following summarizes amounts for UTPs included in our income tax benefit (provision) (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2018		2017		2018		2017
Current provision for UTPs	$	(747)	$	(690)	$	(1,227)	$	(1,365)
Deferred benefit for UTPs		157		231		258		475
Tax provision for UTPs	$	(590)	$	(459)	$	(969)	$	(890)

Summary of Changes to Company's Liabilities for UTPs

The following summarizes the changes to our liabilities for UTPs included in other liabilities in the condensed consolidated balance sheets (in thousands):

	Six Months Ended June 30,
	2018		2017
Liabilities for UTPs:
Opening balance — January 1	$	61,182	$	68,658
Current provision for potential additional interest		1,227		1,365
Ending balance	$	62,409	$	70,023