CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common Stock and Additional Paid-In Capital	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Treasury Stock
Beginning balance (in shares) at Dec. 31, 2020		39,161,214			12,143,433
Stockholders' Equity Attributable to Parent, Beginning Balance at Dec. 31, 2020	$ 63,981	$ 258,756	$ 122	$ (113,164)	$ (81,733)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	12,484			12,484
Unrealized gain on available-for-sale securities, net of taxes	290		290
Exercise of stock options, net of shares withheld for employee taxes (in shares)		325,737
Exercise of stock options, net of shares withheld for employee taxes	2,864	$ 2,864
Release of restricted stock units and awards (in shares)		477,605
Release of restricted stock units and awards	0	$ 0
Issuance of stock for ESPP purchase (in shares)		25,033
Issuance of stock for ESPP purchase	150	$ 150
Shares issued in connection with public offering, net of offering costs (in shares)		6,544,609
Shares issued in connection with public offering, net of offering costs	59,188	$ 59,188
Stock-based compensation	2,338	$ 2,338
Ending balance (in shares) at Dec. 31, 2021		46,534,198			12,143,433
Ending balance at Dec. 31, 2021	141,295	$ 323,296	412	(100,680)	$ (81,733)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	30,664			30,664
Unrealized gain on available-for-sale securities, net of taxes	(210)		(210)
Issuance of stock for ESPP purchase (in shares)		11,416
Issuance of stock for ESPP purchase	51	$ 51
Stock repurchase (in shares)					2,542,065
Stock repurchases	(13,238)				$ (13,238)
Release of restricted stock units and awards net of shares withheld for tax liabilities (in shares)		398,152			42,084
Release of restricted stock units and awards net of shares withheld for tax liabilities	(229)				$ (229)
Shares issued to an employee in lieu of cash compensation (in shares)		30,863
Shares issued to an employee in lieu of cash compensation	157	$ 157
Shares issued in connection with public offering, net of offering costs	5	5
Stock-based compensation	3,417	3,417
Cash dividend declared	(4,212)	$ (4,212)
Ending balance (in shares) at Dec. 31, 2022		46,974,629			14,727,582
Ending balance at Dec. 31, 2022	$ 157,700	$ 322,714	$ 202	$ (70,016)	$ (95,200)