CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock	Retained Earnings	Accumulated Other Comprehensive Loss	Total
Beginning balance at Dec. 31, 2021	$ 641,533	$ 406,257	$ (7,991)	$ 1,039,799
Beginning balance (in shares) at Dec. 31, 2021	56,570
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		10,545		10,545
Other comprehensive income			1,338	1,338
Stock-based compensation expense	$ 4,212			4,212
Options exercised	$ 1,320			1,320
Options exercised (in shares)	52
Issuance of common stock under Employee Stock Purchase Plan	$ 320			320
Issuance of common stock under Employee Stock Purchase Plan (in shares)	5
Shares issued from time-vested restricted stock units (in shares)	44
Shares surrendered in exchange for payment of payroll tax liabilities	$ (1,015)			(1,015)
Shares surrendered in exchange for payment of payroll tax liabilities (in shares)	(16)
Ending balance at Mar. 31, 2022	$ 646,370	416,802	(6,653)	1,056,519
Ending balance (in shares) at Mar. 31, 2022	56,655
Beginning balance at Dec. 31, 2022	$ 675,174	480,773	(11,550)	$ 1,144,397
Beginning balance (in shares) at Dec. 31, 2022	57,306			57,306
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income		20,703		$ 20,703
Other comprehensive income			621	621
Stock-based compensation expense	$ 3,498			3,498
Options exercised	$ 3,726			3,726
Options exercised (in shares)	123
Issuance of common stock under Employee Stock Purchase Plan	$ 302			302
Issuance of common stock under Employee Stock Purchase Plan (in shares)	4
Shares issued from time-vested restricted stock units (in shares)	61
Shares surrendered in exchange for payment of payroll tax liabilities	$ (1,592)			(1,592)
Shares surrendered in exchange for payment of payroll tax liabilities (in shares)	(22)
Ending balance at Mar. 31, 2023	$ 681,108	$ 501,476	$ (10,929)	$ 1,171,655
Ending balance (in shares) at Mar. 31, 2023	57,472			57,472