Accumulated Other Comprehensive Income Reclassification out of AOCI to RE (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	$ 819,018	$ 753,954
Ending Balance	828,792	778,819
Unrealized gain/(loss) on securities available-for-sale
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	8,435	(17,556)
Other comprehensive income/(loss) before reclassifications	14,489	11,568
Reclassified from other comprehensive income/(loss)		0
Other comprehensive income/(loss), net	14,489	11,568
Ending Balance	22,924	(5,988)
Unrealized gain/(loss) on cash flow hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	0	391
Other comprehensive income/(loss) before reclassifications	0	(27)
Reclassified from other comprehensive income/(loss)		(220)
Other comprehensive income/(loss), net	0	(247)
Ending Balance	0	144
Unrealized gain/(loss) on other
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	(860)	(554)
Other comprehensive income/(loss) before reclassifications	0	0
Reclassified from other comprehensive income/(loss)		0
Other comprehensive income/(loss), net	0	0
Ending Balance	(860)	(554)
Accumulated other comprehensive income/(loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning Balance	7,575	(17,719)
Other comprehensive income/(loss) before reclassifications	14,489	11,541
Reclassified from other comprehensive income/(loss)		(220)
Other comprehensive income/(loss), net	14,489	11,321
Ending Balance	$ 22,064	$ (6,398)