Derivative and Hedging Activities - Summary of Derivative Instrument on the Consolidated Statements of Income (Details) - Interest rate swap - Derivatives designated as hedging instruments - Cash Flow Hedging $ in Thousands	3 Months Ended
	Mar. 31, 2016 USD ($)
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain or (Loss) Recognized in Accumulated OCI on Derivative (Effective Portion)	$ 5,526
Amount of Gain or (Loss) Recognized in Income on Derivative (Ineffective Portion)	0
Interest income
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain Reclassified from Accumulated OCI on Derivative (Effective Portion)	$ 644