Accumulated Other Comprehensive Income (Loss) - Summary of Changes In Accumulated Other Comprehensive Income (Loss) By Component, Net of Tax (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	$ 254,379	$ 146,946
Other comprehensive income (loss) before reclassification	2,591	(2,428)
Amounts reclassified from accumulated other comprehensive income (loss)	(179)	(238)
Other comprehensive income (loss)	2,412	(2,666)
Ending balance	259,751	148,693
Gains and Losses on Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(2,636)	(3,679)
Other comprehensive income (loss) before reclassification	198	768
Amounts reclassified from accumulated other comprehensive income (loss)	(188)	(228)
Other comprehensive income (loss)	10	540
Ending balance	(2,626)	(3,139)
Unrealized Gains and Losses on Available for Sale Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(680)	1,162
Other comprehensive income (loss) before reclassification	2,393	(3,216)
Amounts reclassified from accumulated other comprehensive income (loss)	9
Other comprehensive income (loss)	2,402	(3,216)
Ending balance	1,722	(2,054)
Unrealized Losses on Securities Transferred to Held to Maturity
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance		(10)
Other comprehensive income (loss) before reclassification		20
Amounts reclassified from accumulated other comprehensive income (loss)		(10)
Other comprehensive income (loss)		10
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(3,316)	(2,527)
Other comprehensive income (loss)	2,412	(2,666)
Ending balance	$ (904)	$ (5,193)