Other Assets Other Assets (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Other Assets [Abstract]
Lease inducements, net of accumulated amortization of $6,675 and $5,475 in 2015 and 2014, respectively	$ 14,470	$ 12,245
FF&E and leasehold improvements, net of accumulated depreciation of $20,129 and $19,137 in 2015 and 2014, respectively	11,608	10,590
Loan closing costs, net of accumulated amortization of $2,643 and $2,286 in 2015 and 2014, respectively	6,529	6,878
Prepaid expenses and other assets	7,724	3,428
Predevelopment costs and earnest money	2,321	1,789
Other Assets	42,652	34,930
Accumulated Amortization Incentives to Lessees		5,139	4,181
Furniture, Fixture and Equipments and Leasehold Improvements Accumulated Depreciation		18,712	17,684
Accumulated Amortization, Deferred Finance Costs		$ 1,927	$ 2,621