Summary of Selected Significant Accounting Policies - Property and Equipment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Property and Equipment
Land, property and equipment, gross	$ 51,662		$ 51,662		$ 50,077
Less accumulated depreciation and amortization	(14,041)		(14,041)		(12,955)
Land, property and equipment, net	37,621		37,621		37,122
Impairment for long-lived assets
Impairment losses for long-lived assets	0	$ 0	0	$ 0
Land
Property and Equipment
Land, property and equipment, gross	2,925		2,925		2,874
Building and improvements
Property and Equipment
Land, property and equipment, gross	35,645		$ 35,645		34,950
Building and improvements | Minimum
Property and Equipment
Estimated Useful Life			30 years
Building and improvements | Maximum
Property and Equipment
Estimated Useful Life			50 years
Furniture, fixtures and other equipment
Property and Equipment
Land, property and equipment, gross	$ 13,092		$ 13,092		$ 12,253
Furniture, fixtures and other equipment | Minimum
Property and Equipment
Estimated Useful Life			4 years
Furniture, fixtures and other equipment | Maximum
Property and Equipment
Estimated Useful Life			10 years
Leasehold improvements | Minimum
Property and Equipment
Estimated Useful Life			5 years
Leasehold improvements | Maximum
Property and Equipment
Estimated Useful Life			20 years