CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Earnings (Deficit) [Member]	Accumulated Other Comprehensive Income/(Loss) [Member]	Total
Balance at Dec. 31, 2018	$ 56,446	$ (866)	$ 366,181	$ (817)	$ (14,168)	$ 406,776
Balance, shares at Dec. 31, 2018	56,446,088
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				17,930		17,930
Common stock issued from restricted units, net of tax benefits	$ 122		(122)
Common stock issued from restricted units, net of tax benefits, shares	121,916
Stock-based compensation			1,424			1,424
Other comprehensive income net of reclassification adjustments and tax					8,650	8,650
Balance at Mar. 31, 2019	$ 56,568	(866)	367,483	17,113	(5,518)	434,780
Balance (in shares) at Mar. 31, 2019	56,568,004
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Adoption of current expected credit loss accounting, net of taxes				(2,373)		(2,373)
Balance at Dec. 31, 2019	$ 56,941	(866)	371,633	50,742	6,047	$ 484,497
Balance, shares at Dec. 31, 2019	56,940,521					56,940,521
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income				12,591		$ 12,591
Common stock issued from option exercises, net of tax benefits	$ 74		546			620
Common stock issued from option exercises, net of tax benefits, shares	74,000
Common stock issued from restricted units, net of tax benefits	$ 411		(411)
Common stock issued from restricted units, net of tax benefits, shares	411,035
Stock-based compensation			1,216			1,216
Other comprehensive income net of reclassification adjustments and tax					1,553	1,553
Balance at Mar. 31, 2020	$ 57,426	$ (866)	$ 372,984	$ 60,960	$ 7,600	$ 498,104
Balance (in shares) at Mar. 31, 2020	57,425,556					57,425,556