CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY Statement - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Treasury Stock	Retained Earnings	Noncontrolling Interests
Balance, Stockholders Equity at Dec. 31, 2020	$ 810,741	$ 38	$ 698,287	$ (319,092)	$ 429,991	$ 1,517
Balance (in shares) at Dec. 31, 2020		37,470,212
Issuance of stock - employee stock purchase plan	3,022		3,022
Issuance of stock - employee stock purchase plan (shares)		13,357
Issuance/(cancellation) of non-vested stock	0	$ 0	0
Issuance/(cancellation) of non-vested stock (shares)		148,529
Exercise of stock options	1,706		1,706
Exercise of stock options (in shares)		27,186
Non-cash compensation	17,860		17,860
Surrendered Shares	(16,694)			(16,694)
Shares repurchased	(84,879)			(84,879)
Noncontrolling interest distributions	(1,253)					(1,253)
Acquired noncontrolling interest	42,142					42,142
Net income (loss)	176,156				175,025	1,131
Balance, Stockholders Equity at Sep. 30, 2021	948,801	$ 38	720,875	(420,665)	605,016	43,537
Balance (in shares) at Sep. 30, 2021		37,659,284
Balance, Stockholders Equity at Jun. 30, 2021	875,887	$ 38	714,334	(400,110)	560,010	1,615
Balance (in shares) at Jun. 30, 2021		37,553,355
Issuance of stock - employee stock purchase plan	1,061		1,061
Issuance of stock - employee stock purchase plan (shares)		5,095
Issuance/(cancellation) of non-vested stock	0	$ 0	0
Issuance/(cancellation) of non-vested stock (shares)		87,460
Exercise of stock options	1,083		1,083
Exercise of stock options (in shares)		13,374
Non-cash compensation	4,397		4,397
Surrendered Shares	(9,750)			(9,750)
Shares repurchased	(10,805)			(10,805)
Noncontrolling interest distributions	(459)					(459)
Acquired noncontrolling interest	42,142					42,142
Net income (loss)	45,245				45,006	239
Balance, Stockholders Equity at Sep. 30, 2021	948,801	$ 38	720,875	(420,665)	605,016	43,537
Balance (in shares) at Sep. 30, 2021		37,659,284
Balance, Stockholders Equity at Dec. 31, 2021	976,323	$ 38	728,118	(435,868)	639,063	44,972
Balance (in shares) at Dec. 31, 2021		37,674,868
Issuance of stock - employee stock purchase plan	2,857		2,857
Issuance of stock - employee stock purchase plan (shares)		24,159
Issuance/(cancellation) of non-vested stock	0	$ 0	0
Issuance/(cancellation) of non-vested stock (shares)		141,726
Exercise of stock options	1,078		1,078
Exercise of stock options (in shares)		11,306
Non-cash compensation	15,990		15,990
Surrendered Shares	(7,949)			(7,949)
Shares repurchased	(17,351)			(17,351)
Noncontrolling interest contributions	11,000		0			11,000
Noncontrolling interest distributions	(1,425)					(1,425)
Sale of noncontrolling interest	2,934		2,871			63
Net income (loss)	86,153				86,892	(739)
Balance, Stockholders Equity at Sep. 30, 2022	1,069,610	$ 38	750,914	(461,168)	725,955	53,871
Balance (in shares) at Sep. 30, 2022		37,852,059
Balance, Stockholders Equity at Jun. 30, 2022	1,038,995	$ 38	743,276	(457,981)	700,313	53,349
Balance (in shares) at Jun. 30, 2022		37,780,242
Issuance of stock - employee stock purchase plan	966		966
Issuance of stock - employee stock purchase plan (shares)		10,814
Issuance/(cancellation) of non-vested stock	0	$ 0	0
Issuance/(cancellation) of non-vested stock (shares)		57,420
Exercise of stock options	306		306
Exercise of stock options (in shares)		3,583
Non-cash compensation	3,495		3,495
Surrendered Shares	(3,187)			(3,187)
Noncontrolling interest contributions	1,148					1,148
Noncontrolling interest distributions	(450)					(450)
Sale of noncontrolling interest	2,934		2,871			63
Net income (loss)	25,403				25,642	(239)
Balance, Stockholders Equity at Sep. 30, 2022	$ 1,069,610	$ 38	$ 750,914	$ (461,168)	$ 725,955	$ 53,871
Balance (in shares) at Sep. 30, 2022		37,852,059