Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings
Balance (in shares) at Dec. 31, 2020		52,225
Balance at Dec. 31, 2020	$ 350,865	$ 209	$ 5,161	$ 345,495
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	36,991			36,991
Stock options exercised, restricted stock awards granted, and contingent shares issued (Note 16) (in shares)		361
Stock options exercised, restricted stock awards granted, and contingent shares issued (Note 16)	11,848	$ 2	11,846
Share-based compensation	5,793		5,793
Stock repurchased and retired (in shares)		(170)
Stock repurchased and retired	(11,803)	$ (1)	(11,802)	0
Dividends net of refunds for cancelled cash dividends	9,968			9,968
Balance (in shares) at Jun. 30, 2021		52,416
Balance at Jun. 30, 2021	383,726	$ 210	10,998	372,518
Balance (in shares) at Mar. 31, 2021		52,424
Balance at Mar. 31, 2021	373,038	$ 210	10,957	361,871
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	20,615			20,615
Stock options exercised, restricted stock awards granted, and contingent shares issued (Note 16) (in shares)		75
Stock options exercised, restricted stock awards granted, and contingent shares issued (Note 16)	2,410	$ 0	2,410
Share-based compensation	3,032		3,032
Stock repurchased and retired (in shares)		(83)
Stock repurchased and retired	(5,401)	$ 0	(5,401)
Dividends net of refunds for cancelled cash dividends	9,968			9,968
Balance (in shares) at Jun. 30, 2021		52,416
Balance at Jun. 30, 2021	383,726	$ 210	10,998	372,518
Balance (in shares) at Dec. 31, 2021		52,528
Balance at Dec. 31, 2021	466,170	$ 210	81,654	384,306
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	34,005			34,005
Stock options exercised, restricted stock awards granted, and contingent shares issued (Note 16) (in shares)		719
Stock options exercised, restricted stock awards granted, and contingent shares issued (Note 16)	6,385	$ 3	6,382
Share-based compensation	6,908		6,908
Stock repurchased and retired (in shares)		(120)
Stock repurchased and retired	(6,866)	$ 0	(6,866)
Contingent consideration (Note 3)	(6,000)		(6,000)
Dividends net of refunds for cancelled cash dividends	(10,096)			(10,096)
Balance (in shares) at Jun. 30, 2022		53,127
Balance at Jun. 30, 2022	490,506	$ 213	82,078	408,215
Balance (in shares) at Mar. 31, 2022		53,065
Balance at Mar. 31, 2022	480,156	$ 212	77,574	402,370
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	15,946			15,946
Stock options exercised, restricted stock awards granted, and contingent shares issued (Note 16) (in shares)		114
Stock options exercised, restricted stock awards granted, and contingent shares issued (Note 16)	3,493	$ 1	3,492
Share-based compensation	3,796		3,796
Stock repurchased and retired (in shares)		(52)
Stock repurchased and retired	(2,784)		(2,784)	0
Dividends net of refunds for cancelled cash dividends	10,101			10,101
Balance (in shares) at Jun. 30, 2022		53,127
Balance at Jun. 30, 2022	$ 490,506	$ 213	$ 82,078	$ 408,215