Fair Value of Financial Instruments - Summary of Financial Liabilities Measured on a Recurring Basis (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Financial liabilities	$ 4,909	$ 3,515
Interest Rate Swap | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Financial liabilities	0	0
Interest Rate Swap | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Financial liabilities	4,909	3,515
Interest Rate Swap | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Financial liabilities	0	$ 0
Accounts Payable and Accrued Expenses | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis
Financial liabilities	$ 4,909