Related Party Transactions - Schedule of Related Party Transactions (Details) - Management - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Related Party Transaction
Amounts of transaction with related party	$ 6,485	$ 6,167	$ 4,874
Incurred Costs, Prepaid or Expensed
Related Party Transaction
Amounts of transaction with related party	6,463	5,954	4,449
Incurred Costs, Charged Against Equity as a Cost of Raising Capital
Related Party Transaction
Amounts of transaction with related party	22	213	418
Incurred Costs, Capitalized to Other Assets
Related Party Transaction
Amounts of transaction with related party	$ 0	$ 0	$ 7