CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid In Capital	Retained Earnings	Retained Earnings Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock	Accumulated Other Comprehensive Loss
BALANCE, Shares at Dec. 31, 2018			32,723,972
BALANCE at Dec. 31, 2018	$ 182,498		$ 327	$ 181,815	$ 105,212			$ (431)
BALANCE, Treasury Stock, Shares at Dec. 31, 2018							(2,808,361)
BALANCE, Treasury Stock, Value at Dec. 31, 2018							$ (104,425)
Net income	68,159				68,159
Issuance of common stock awards to employees (in shares)			139,862
Issuance of common stock awards to employees	0		$ 2	(2)
Surrender of common stock awards by employees (in shares)							(46,803)
Surrender of common stock awards	(2,331)						$ (2,331)
Share-based compensation expense	8,057			8,057
Share-based compensation issued to directors (in shares)			7,670
Share-based compensation issued to directors	360			360
Net change in cash flow hedges, net of tax	(6,712)							(6,712)
BALANCE at Dec. 31, 2019	250,031	$ (1,190)	$ 329	190,230	173,371	$ (1,190)		(7,143)
BALANCE, Shares at Dec. 31, 2019			32,871,504
BALANCE, Treasury Stock, Shares at Dec. 31, 2019							(2,855,164)
BALANCE, Treasury Stock, Value at Dec. 31, 2019							$ (106,756)
Net income	97,239				97,239
Issuance of common stock awards to employees (in shares)			264,004
Issuance of common stock awards to employees	0		$ 2	(2)
Surrender of common stock awards by employees (in shares)							(30,223)
Surrender of common stock awards	(973)						$ (973)
Share-based compensation expense	9,286			9,286
Share-based compensation issued to directors (in shares)			6,371
Share-based compensation issued to directors	$ 333			333
Common stock repurchase (in shares)	(633,000)						(633,220)
Common stock repurchase	$ (33,924)						$ (33,924)
Net change in cash flow hedges, net of tax	(1,620)							(1,620)
BALANCE at Dec. 31, 2020	$ 319,182		$ 331	199,847	269,420			(8,763)
BALANCE, Shares at Dec. 31, 2020	33,141,879		33,141,879
BALANCE, Treasury Stock, Shares at Dec. 31, 2020	(3,518,607)						(3,518,607)
BALANCE, Treasury Stock, Value at Dec. 31, 2020	$ (141,653)						$ (141,653)
Net income	118,763				118,763
Issuance of common stock awards to employees (in shares)			125,550
Issuance of common stock awards to employees	0		$ 2	(2)
Surrender of common stock awards by employees (in shares)							(46,651)
Surrender of common stock awards	(5,586)						$ (5,586)
Share-based compensation expense	11,118			11,118
Share-based compensation issued to directors (in shares)			4,230
Share-based compensation issued to directors	467			467
Dividends Declared ($1.20 per share)	(35,640)				(35,640)
Net change in cash flow hedges, net of tax	8,536							8,536
BALANCE at Dec. 31, 2021	$ 416,840		$ 333	$ 211,430	$ 352,543			$ (227)
BALANCE, Shares at Dec. 31, 2021	33,271,659		33,271,659
BALANCE, Treasury Stock, Shares at Dec. 31, 2021	(3,565,258)						(3,565,258)
BALANCE, Treasury Stock, Value at Dec. 31, 2021	$ (147,239)						$ (147,239)