Summary of Significant Accounting Policies Deferred Tax Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Accounting Policies [Abstract]
Current TRS Tax Expense (benefit)	$ (36)	$ 0	$ 0
Fixed assets	16,022	13,791
Net operating losses	578	2,249
Other	381	412
Less Valuation allowance	0	(1,779)
Total deferred tax assets	16,981	14,673
Deferred Tax Liabilities, Capital Improvements	(1,716)	(224)
Straight line receivable	(2,177)	(2,731)
Other	(830)	(848)
Total deferred tax liabilities	(4,723)	(3,803)
Net deferred tax asset	12,258	10,870
Income Tax Expense (Benefit), Continuing Operations, by Jurisdiction [Abstract]
Current state income tax expense	(414)	(899)	(579)
Current foreign income tax	(77)	431	(493)
Current foreign withholding tax	(1,130)	(1,107)	(1,040)
Deferred TRS Income Tax Expense (Benefit)	273	0	0
Deferred foreign withholding tax	39	(43)	(320)
Deferred Other Tax Expense (Benefit)	792	1,136	(1,796)
Deferred income tax benefit (expense)	1,065	1,136	(1,796)
Income tax expense	$ (553)	$ (482)	$ (4,228)