CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings
Beginning balance (in shares) at Dec. 31, 2020		48,988,142
Beginning balance at Dec. 31, 2020	$ 175,427	$ 6	$ (11,434)	$ 144,163	$ 1	$ 42,691
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	3,318			3,318
Exercise of stock options (in shares)		278,412
Exercise of stock options	451			451
Repurchase of treasury stock, at cost (in shares)		(693)
Repurchase of treasury stock, at cost	(27)		(27)
Other comprehensive loss	(1)				(1)
Net income	4,918					4,918
Ending balance (in shares) at Mar. 31, 2021		49,265,861
Ending balance at Mar. 31, 2021	184,086	$ 6	(11,461)	147,932	0	47,609
Beginning balance (in shares) at Dec. 31, 2020		48,988,142
Beginning balance at Dec. 31, 2020	175,427	$ 6	(11,434)	144,163	1	42,691
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	14,839
Ending balance (in shares) at Jun. 30, 2021		50,242,826
Ending balance at Jun. 30, 2021	202,081	$ 6	(11,486)	156,031	0	57,530
Beginning balance (in shares) at Mar. 31, 2021		49,265,861
Beginning balance at Mar. 31, 2021	184,086	$ 6	(11,461)	147,932	0	47,609
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	3,837			3,837
Exercise of stock options (in shares)		800,426
Exercise of stock options	1,627			1,627
Repurchase of treasury stock, at cost (in shares)		(449)
Repurchase of treasury stock, at cost	(25)		(25)
Issuance of common stock related to employee stock purchase plan (in shares)		155,015
Issuance of common stock related to employee stock purchase plan	2,635			2,635
Issuance of common stock related to RSU vesting (in shares)		21,973
Other comprehensive loss	0				0
Net income	9,921					9,921
Ending balance (in shares) at Jun. 30, 2021		50,242,826
Ending balance at Jun. 30, 2021	202,081	$ 6	(11,486)	156,031	0	57,530
Beginning balance (in shares) at Dec. 31, 2021		51,854,749
Beginning balance at Dec. 31, 2021	257,180	$ 6	(11,486)	169,401	(36)	99,295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	5,469			5,469
Exercise of stock options (in shares)		130,958
Exercise of stock options	481			481
Issuance of common stock related to RSU vesting (in shares)		25,033
Other comprehensive loss	(203)				(203)
Net income	4,779					4,779
Ending balance (in shares) at Mar. 31, 2022		52,010,740
Ending balance at Mar. 31, 2022	267,706	$ 6	(11,486)	175,351	(239)	104,074
Beginning balance (in shares) at Dec. 31, 2021		51,854,749
Beginning balance at Dec. 31, 2021	$ 257,180	$ 6	(11,486)	169,401	(36)	99,295
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Exercise of stock options (in shares)	227,234
Net income	$ 12,598
Ending balance (in shares) at Jun. 30, 2022		52,338,348
Ending balance at Jun. 30, 2022	283,916	$ 6	(11,486)	183,890	(387)	111,893
Beginning balance (in shares) at Mar. 31, 2022		52,010,740
Beginning balance at Mar. 31, 2022	267,706	$ 6	(11,486)	175,351	(239)	104,074
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation	5,780			5,780
Exercise of stock options (in shares)		96,276
Exercise of stock options	357			357
Issuance of common stock related to RSU vesting (in shares)		89,623
Issuance of common stock related to employee stock purchase plan (in shares)		141,709
Issuance of common stock related to employee stock purchase plan	2,402			2,402
Other comprehensive loss	(148)				(148)
Net income	7,819					7,819
Ending balance (in shares) at Jun. 30, 2022		52,338,348
Ending balance at Jun. 30, 2022	$ 283,916	$ 6	$ (11,486)	$ 183,890	$ (387)	$ 111,893