Transactions with Affiliates (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Chairman and Chief Executive Officer, and Certain Family Partnerships and Affiliates [Member]
Related Party Transaction [Line Items]
Investment commitments with related party	$ 12,000,000	$ 22,700,000
Due to related parties, current	38,000	42,000
Expense reimbursements from related parties	152,000	152,000	145,000
Other Affiliated Entities [Member]
Related Party Transaction [Line Items]
Expense reimbursements from related parties	69,000	64,000	42,000
Expense reimbursements to related parties	99,000	98,000	118,000
Rent expense paid	$ 481,000	$ 442,000