Income Taxes - (Tables)

12 Months Ended

Dec. 31, 2016

Income Tax Disclosure [Abstract]

Summarized Statement of Components of Income Tax Provision

The income tax provision for the years ended December 31, 2016, 2015 and 2014, is comprised of the following components:

	For the Year Ended December 31, 2016
	Federal			State			Total
Current expense	$	14,627		$	2,368		$	16,995
Tax credits/true-up	(312		)	—			(312		)
Change in deferred benefit	(369		)	(467		)	(836		)
Total tax expense	$	13,946		$	1,901		$	15,847

	For the Year Ended December 31, 2015
	Federal		State			Total
Current expense	$	3,736	$	1,640		$	5,376
Tax credits/true-up	274		—			274
Change in deferred benefit	7,016		(1,518		)	5,498
Total tax expense	$	11,026	$	122		$	11,148

	For the Year Ended December 31, 2014
	Federal			State		Total
Current expense	$	6,020		$	1,374	$	7,394
Tax credits/true-up	(2,176		)	—		(2,176		)
Change in deferred benefit	803			1,549		2,352
Total tax expense	$	4,647		$	2,923	$	7,570

Schedule of Reconciliation of Statutory Income Tax Provisions to the Effective Income Tax Provisions

A reconciliation of the statutory income tax provisions to the effective income tax provisions for the periods indicated is as follows:

	For the Year Ended December 31,
	2016					2015					2014
Expected tax at statutory rate	$	144,708		35.0	%	$	77,151		35.0	%	$	71,215		35.0	%
Non-taxable REIT income	(131,112		)	(31.7	)%	(67,084		)	(30.4	)%	(64,402		)	(31.7	)%
State and local tax expense - net of federal benefit	2,399			0.6	%	1,249			0.6	%	1,109			0.6	%
Change in valuation allowance	(845		)	(0.2	)%	(624		)	(0.3	)%	1,663			0.8	%
Tax credits/true-up	(312		)	(0.1	)%	274			0.1	%	(2,176		)	(1.1	)%
Miscellaneous	1,009			0.2	%	182			0.1	%	161			0.1	%
Total provision	$	15,847		3.8	%	$	11,148		5.1	%	$	7,570		3.7	%

Schedule of Major Sources of Temporary Differences Stated at their Deferred Tax Effects

The major sources of temporary differences stated at their deferred tax effects are as follows:

	December 31, 2016			December 31, 2015
Deferred tax liabilities:
Fixed assets	$	(16,488	)	$	(17,360	)
Other	(201		)	(221		)
State deferred taxes	(1,242		)	(1,523		)
Total deferred tax liabilities	(17,931		)	(19,104		)
Deferred tax assets:
Captive insurance subsidiary	413			429
Accrued liabilities	2,741			2,633
Stock compensation	1,713			1,346
Solar credit	—			2,167
Other	1,548			309
SmartStop TRS	365			1,085
State deferred taxes	6,078			6,016
Total deferred tax assets	12,858			13,985
Valuation allowance	(4,765		)	(5,609		)
Net deferred income tax liabilities	$	(9,838	)	$	(10,728	)