Consolidated Statements of Comprehensive Income (Loss) (unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (5,830)	$ 360
Unrealized gain (loss) on securities available-for-sale:
Unrealized holding gains (losses) arising during the year	6,476	(4,048)
Less: reclassification adjustment for net gain on sales of securities available-for-sale	(373)	0
Unrealized holding gains (losses) arising during the year	6,103	(4,048)
Unrealized gain on derivative instruments designated as cash flow hedges:
Unrealized holding gains on derivatives arising during the period	(261)	309
Net change in unrealized (loss) gain on derivative instruments	(261)	309
Total other comprehensive income (loss), before tax	5,842	(3,739)
Income tax effect related to items of other comprehensive income (loss)	0	785
Total other comprehensive income (loss), net of tax	5,842	(2,954)
Total comprehensive income (loss)	$ 12	$ (2,594)