Derivatives and Hedging Activities - Schedule of Derivative Instruments, Effect on Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Designated as Hedging Instrument
Derivative [Line Items]
Amount of loss recognized in other comprehensive income (effective portion)	$ (658)	$ 512	$ (1,095)	$ (2,490)
Reclassification adjustment for derivatives net (gains) losses included in income	1,128	0	1,128	0
Not Designated as Hedging Instrument
Derivative [Line Items]
Amount of gain (loss) recognized in other non-interest income	24	(3)	(49)	(82)
Amount of net fee income recognized in other non-interest income	162	0	441	245
Amount of net gains recognized in mortgage banking revenues	$ 358	$ 752	$ 539	$ 1,970