CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Retained Earnings Adjustment	Retained Earnings	Accumulated Other Comprehensive (Loss) Income	Treasury Stock	Non-controlling Interest	Adjustment	Total
Beginning Balance at Dec. 31, 2019	$ 305,631	$ (90)	$ 214,225	$ (335)		$ 10,149	$ (90)	$ 529,670
Beginning Balance (in shares) at Dec. 31, 2019	59,414,583
Increase (Decrease) in Stockholders' Equity
Capital contribution from non-controlling interest						7,496		7,496
Capital distribution to non-controlling interest						(386)		(386)
Stock based compensation expense	$ 45							45
Repurchase of common shares					$ (8,803)			(8,803)
Repurchase of common shares (in shares)	(532,034)
Other comprehensive income (loss), net of tax				(1,178)				(1,178)
Net income (loss)			25,417			249		25,666
Ending Balance at Sep. 30, 2020	$ 305,676		239,552	(1,513)	(8,803)	17,508		552,420
Ending Balance (in shares) at Sep. 30, 2020	58,882,549
Beginning Balance at Jun. 30, 2020	$ 305,676		231,801	(1,530)	(8,803)	15,506		542,650
Beginning Balance (in shares) at Jun. 30, 2020	58,882,549
Increase (Decrease) in Stockholders' Equity
Capital contribution from non-controlling interest						2,357		2,357
Capital distribution to non-controlling interest						(386)		(386)
Other comprehensive income (loss), net of tax				17				17
Net income (loss)			7,751			31		7,782
Ending Balance at Sep. 30, 2020	$ 305,676		239,552	(1,513)	$ (8,803)	17,508		552,420
Ending Balance (in shares) at Sep. 30, 2020	58,882,549
Beginning Balance at Dec. 31, 2020	$ 296,873		255,216	(1,472)		17,553		$ 568,170
Beginning Balance (in shares) at Dec. 31, 2020	58,882,549							58,882,549
Increase (Decrease) in Stockholders' Equity
Capital contribution from non-controlling interest						3,188		$ 3,188
Capital distribution to non-controlling interest						(958)		(958)
Repurchase of common shares (in shares)	0
Dividends ($0.08 per share)			(14,133)					(14,133)
Other comprehensive income (loss), net of tax				592				592
Net income (loss)			42,616			(857)		41,759
Ending Balance at Sep. 30, 2021	$ 296,873		283,699	(880)		18,926		$ 598,618
Ending Balance (in shares) at Sep. 30, 2021	58,882,549							58,882,549
Beginning Balance at Jun. 30, 2021	$ 296,873		273,214	(1,221)		19,649		$ 588,515
Beginning Balance (in shares) at Jun. 30, 2021	58,882,549
Increase (Decrease) in Stockholders' Equity
Capital distribution to non-controlling interest						(304)		(304)
Dividends ($0.08 per share)			(4,711)					(4,711)
Other comprehensive income (loss), net of tax				341				341
Net income (loss)			15,196			(419)		14,777
Ending Balance at Sep. 30, 2021	$ 296,873		$ 283,699	$ (880)		$ 18,926		$ 598,618
Ending Balance (in shares) at Sep. 30, 2021	58,882,549							58,882,549