Income Taxes (Details 2) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Deferred tax assets:
Federal and state tax attributes	$ 2,227	$ 0	$ 13,069
Book/tax depreciation	9,016	6,692	19,354
Construction capitalization differences	0	75	0
Debt and interest deductions	0	0	10,311
Other	707	401	0
Total deferred tax assets	11,950	7,168	42,734
Valuation allowance	(81)	0	(1,310)
Net deferred tax assets	11,869	7,168	41,424
Deferred Tax Liabilities, Deferred Expense, Other Capitalized Costs	0	0	(3,766)
Deferred Tax Liabilities, Investment in Noncontrolled Affiliates	0	0	(5,080)
Deferred tax liabilities:
Other	(107)	(192)	(305)
Total deferred tax liabilities	(107)	(192)	(9,151)
Net deferred tax asset	$ 11,762	$ 6,976	$ 32,273

The amount as of the balance sheet date of the estimated future tax effects attributable to differences between the methods used to account for financing arrangements for tax purposes and under generally accepted accounting principles which will decrease future taxable income when such differences reverse.

No definition available.