Derivatives (Details) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Forward Contracts instrument	Dec. 31, 2013 Forward Contracts instrument	Apr. 30, 2013 Forward Contracts instrument
Derivative [Line Items]
Number of interest rate derivatives held			3	4	4
Derivative, Notional Amount			$ 225,000,000	$ 240,000,000	$ 240,000,000
Fair value of outstanding forward swaps designated as cash flow hedges			3,373,000
Interest rate cash flow hedge liability, fair value					3,156,000
Amount of cash flow hedge reported in AOCI					3,141,000
Fair value of interest rate hedges recognized in other comprehensive income	8,261,000
Interest expense	135,000	60,000
Interest rate hedges gain (loss) to be reclassified into interest expense over next 12 months	$ 996,000