Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Loss [Member]	Retained Earnings [Member]
Beginning Balance at Dec. 31, 2022	$ 177,842	$ 275	$ 32,538	$ (27,594)	$ 172,623
Beginning Balance, shares at Dec. 31, 2022		27,483
Common stock issued on exercise of options, purchase of ESPP shares and vesting of restricted stock units and performance awards	702	$ 4	698
Common stock issued on exercise of options, purchase of ESPP shares and vesting of restricted stock units and performance awards, shares		436
Common stock repurchased on vesting of restricted stock units and performance awards	(2,993)	$ (1)	(2,992)
Common stock repurchased on vesting of restricted stock units and performance awards, shares		(130)
Share-based compensation expense	8,465		8,465
Company repurchase of common stock	(34,192)	$ (15)	(1,966)		(32,211)
Company repurchase of common stock, shares		(1,499)
Cash dividends on common stock	(8,089)				(8,089)
Unrealized gain (loss) on investments, net of tax	6,793			6,793
Net income	50,612				50,612
Ending Balance at Dec. 31, 2023	199,140	$ 263	36,743	(20,801)	182,935
Ending Balance, shares at Dec. 31, 2023		26,290
Common stock issued on exercise of options, purchase of ESPP shares and vesting of restricted stock units and performance awards	931	$ 5	926
Common stock issued on exercise of options, purchase of ESPP shares and vesting of restricted stock units and performance awards, shares		497
Common stock repurchased on vesting of restricted stock units and performance awards	(4,837)	$ (2)	(4,835)
Common stock repurchased on vesting of restricted stock units and performance awards, shares		(153)
Share-based compensation expense	8,840		8,840
Company repurchase of common stock	(29,133)	$ (8)	(1,278)		(27,847)
Company repurchase of common stock, shares		(850)
Cash dividends on common stock	(8,086)				(8,086)
Unrealized gain (loss) on investments, net of tax	1,556			1,556
Net income	52,993				52,993
Ending Balance at Dec. 31, 2024	221,404	$ 258	40,396	(19,245)	199,995
Ending Balance, shares at Dec. 31, 2024		25,784
Common stock issued on exercise of options, purchase of ESPP shares and vesting of restricted stock units and performance awards	3,201	$ 6	3,195
Common stock issued on exercise of options, purchase of ESPP shares and vesting of restricted stock units and performance awards, shares		575
Common stock repurchased on vesting of restricted stock units and performance awards	(6,031)	$ (2)	(6,029)
Common stock repurchased on vesting of restricted stock units and performance awards, shares		(144)
Share-based compensation expense	10,360		10,360
Company repurchase of common stock	(41,958)	$ (10)	(1,801)		(40,147)
Company repurchase of common stock, shares		(1,036)
Cash dividends on common stock	(8,182)				(8,182)
Unrealized gain (loss) on investments, net of tax	7,758			7,758
Net income	54,448				54,448
Ending Balance at Dec. 31, 2025	$ 241,000	$ 252	$ 46,121	$ (11,487)	$ 206,114
Ending Balance, shares at Dec. 31, 2025		25,179