Consolidated Statements of Changes in Stockholders Equity - USD ($) $ in Thousands	Common stock	Paid-in capital	Accumulated other comprehensive (loss) income	Retained deficit	Treasury shares	Total
Balance at the beginning of the period at Dec. 31, 2018	$ 389	$ 607,260	$ (22,315)	$ (195,304)	$ (200)	$ 389,830
Increase (decrease) in Stockholders' Equity
Stock based employee compensation plan		77				77
Net unrealized gain (loss) on investment securities, net of deferred tax expense			27,752			27,752
Equity distribution		(4,174)				(4,174)
Net income				13,440		13,440
Balance at the end of the period at Mar. 31, 2019	389	603,163	5,437	(181,864)	(200)	426,925
Balance at the beginning of the period at Dec. 31, 2019	431	661,761	37,453	(156,414)	(200)	543,031
Increase (decrease) in Stockholders' Equity
Stock based employee compensation plan	2	1,754				1,756
Retirement of common stock (tax payments on equity compensation)		(2,263)				(2,263)
Net unrealized gain (loss) on investment securities, net of deferred tax expense			(61,441)			(61,441)
Payments related to offering costs		(49)				(49)
Net income				7,068		7,068
Balance at the end of the period at Mar. 31, 2020	$ 433	$ 661,203	$ (23,988)	$ (149,346)	$ (200)	$ 488,102