Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	$ 304,913	$ 288,735
Net change in unrealized gain	(7,159)	3,338
Reclassification of net loss realized and included in earnings	(41)
Accumulated other comprehensive loss before income tax	(21,391)	(13,203)
Income tax provision (benefit)	(1,525)	965
Balance, end of period	305,127	294,013
Available-For-Sale Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(4,388)	(13,360)
Net change in unrealized gain	6,299	6,910
Reclassification of net loss realized and included in earnings	(41)
Accumulated other comprehensive loss before income tax	1,870	(6,450)
Income tax provision (benefit)	2,109	1,930
Balance, end of period	(239)	(8,380)
Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(9,803)	(3,181)
Net change in unrealized gain	(13,458)	(3,572)
Reclassification of net loss realized and included in earnings	0
Accumulated other comprehensive loss before income tax	(23,261)	(6,753)
Income tax provision (benefit)	(3,634)	(965)
Balance, end of period	(19,627)	(5,788)
Accumulated Other Comprehensive Loss
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance, beginning of period	(14,191)	(16,541)
Balance, end of period	$ (19,866)	$ (14,168)