Schedule III (Consolidated) - Real Estate and Accumulated Depreciation - Reconciliation of Accumulated Depreciation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
SEC Schedule III, Reconciliation of Real Estate Accumulated Depreciation [Roll Forward]
Balance at beginning of the year	$ 58,132	$ 53,496	$ 49,772
Depreciation expense	6,689	6,170	6,547
Amounts retired or adjusted	(752)	(1,534)	(2,823)
Balance at the end of the year	$ 64,069	$ 58,132	$ 53,496