Income Taxes (Tables)

12 Months Ended

Dec. 31, 2012

Income Taxes

Schedule of components of provision for (benefit from) state income taxes

The provision for state income taxes consisted of the following (in thousands):

	Years Ended December 31,
	2012		2011		2010
Current tax provision:
State	$	60	$	918	$	680
Total current	60		918		680
Deferred tax provision:
State	885		—		—
Total deferred	885		—		—
Provision for income taxes	$	945	$	918	$	680

Schedule of tax effects of temporary differences that give rise to deferred tax liabilities

The tax effects of temporary differences that give rise to deferred tax liabilities are as follows (in thousands):

	Years Ended December 31,
	2012			2011
Deferred tax liabilities:
Property, plant and equipment	$	(885	)	$	—
Total deferred tax liabilities	(885		)	—
Net deferred tax liabilities	$	(885	)	$	—

Schedule of reconciliation of the beginning and ending amount of unrecognized tax benefits

A reconciliation of the beginning and ending amount of unrecognized tax benefits is shown below (in thousands):

	Years Ended December 31,
	2012		2011		2010
Beginning balance	$	—	$	—	$	—
Additions based on tax positions related to current year	96		—		—
Additions based on tax positions related to prior years	447		—		—
Ending balance	$	543	$	—	$	—

Schedule of reconciliation of net income (loss), as reported, to the entity's U.S. federal partnership taxable income (loss)

The following table reconciles net income (loss), as reported, to our U.S. federal partnership taxable income (loss) (in thousands):

	Years EndedDecember 31,
	2012			2011			2010
Net income (loss), as reported	$	10,509		$	6,053		$	(23,333	)
Book/tax depreciation and amortization adjustment	44,329			6,201			7,524
Book/tax adjustment for unit-based compensation expense	797			532			1,209
Book/tax adjustment for interest rate swap terminations	898			10,252			(12,386		)
Other temporary differences	(4,104		)	(2,496		)	2,212
Other permanent differences	9			93			4
U.S. federal partnership taxable income (loss)	$	52,438		$	20,635		$	(24,770	)