Related Party Transactions and Arrangements (Schedule of Amount Contractually Due and Forgiven in Connection With Operation Related Services) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Incurred [Member] | Total operation fees and reimbursements [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	$ 5,076	$ 868
Forgiven [Member] | Total operation fees and reimbursements [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	1,746	202
Payable [Member] | Total operation fees and reimbursements [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	382	0
Nonrecurring Fees [Member] | Incurred [Member] | Acquisition and Related Expenses [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	2,353	400
Nonrecurring Fees [Member] | Incurred [Member] | Financing fees and related cost reimbursements [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	845	131
Nonrecurring Fees [Member] | Incurred [Member] | Other expense reimbursements [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	132	135
Nonrecurring Fees [Member] | Forgiven [Member] | Acquisition and Related Expenses [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	0	0
Nonrecurring Fees [Member] | Forgiven [Member] | Financing fees and related cost reimbursements [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	0	0
Nonrecurring Fees [Member] | Forgiven [Member] | Other expense reimbursements [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	0	0
Nonrecurring Fees [Member] | Payable [Member] | Acquisition and Related Expenses [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	364	0
Nonrecurring Fees [Member] | Payable [Member] | Financing fees and related cost reimbursements [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	0	0
Nonrecurring Fees [Member] | Payable [Member] | Other expense reimbursements [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	18	0
Recurring Fees [Member] | Incurred [Member] | Base management fees [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	975	202
Recurring Fees [Member] | Incurred [Member] | Incentive fees [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	771	0
Recurring Fees [Member] | Forgiven [Member] | Base management fees [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	975	202
Recurring Fees [Member] | Forgiven [Member] | Incentive fees [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	771	0
Recurring Fees [Member] | Payable [Member] | Base management fees [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	0	0
Recurring Fees [Member] | Payable [Member] | Incentive fees [Member]
Related Party Transaction [Line Items]
Related party operation fees and reimbursements	$ 0	$ 0