Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative-Effect Adjustments for Adoption of Accounting Principle	Common Stock	Additional Paid-in Capital	Retained Earnings	Retained Earnings Cumulative-Effect Adjustments for Adoption of Accounting Principle	Treasury Stock	Accumulated Other Comprehensive Loss
Balance at Dec. 31, 2019	$ 714,551		$ 23	$ 346,795	$ 544,840		$ (164,963)	$ (12,144)
Balance (in shares) at Dec. 31, 2019			18,868				3,978
Net Income	54,959				54,959
Other comprehensive income (loss)	(1,962)							(1,962)
Equity compensation	17,555			17,555
Exercise of stock options	2,652			2,652
Exercise of stock options (in shares)			70
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units				2,056
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units (in shares)			389
Net payments for stock buybacks	(31,782)						$ (31,782)
Net payments for stock buybacks (in shares)			(417)				417
Balance at Dec. 31, 2020	746,961	$ (513)	$ 23	369,058	588,731	$ (513)	$ (196,745)	(14,106)
Dividends declared	(10,555)				(10,555)
Balance (in shares) at Dec. 31, 2020			18,910				4,395
Net Income	71,132				71,132
Other comprehensive income (loss)	3,071							3,071
Equity compensation	13,230			13,230
Exercise of stock options	233			233
Exercise of stock options (in shares)			8
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units	2,463			2,463
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units (in shares)			222
Net payments for stock buybacks	(23,055)						$ (23,055)
Net payments for stock buybacks (in shares)			(264)				264
Balance at Dec. 31, 2021	803,470		$ 23	384,984	649,298		$ (219,800)	(11,035)
Dividends declared	(10,565)				(10,565)
Balance (in shares) at Dec. 31, 2021			18,876				4,659
Net Income	64,243				64,243
Other comprehensive income (loss)	2,902							2,902
Equity compensation	13,171			13,171
Exercise of stock options	602			602
Exercise of stock options (in shares)			19
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units	3,200			3,200
Issuance of shares pursuant to employee stock purchase plan and vesting of restricted stock units (in shares)			235
Net payments for stock buybacks	(23,866)						$ (23,866)
Net payments for stock buybacks (in shares)			(247)				247
Balance at Dec. 31, 2022	853,211		$ 23	$ 401,957	703,030		$ (243,666)	$ (8,133)
Dividends declared	$ (10,511)				$ (10,511)
Balance (in shares) at Dec. 31, 2022			18,883				4,906