CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Retained Earnings Adjustment	Retained Earnings	Accumulated Other Comprehensive Loss.	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						5,139		5,139
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				(1,195)				(1,195)
Net income (loss)			17,666			218		17,884
Ending Balance at Jun. 30, 2020	$ 305,676		231,801	(1,530)	(8,803)	15,506		542,650
Ending Balance (in shares) at Jun. 30, 2020	58,882,549
Beginning Balance at Mar. 31, 2020	$ 305,658		212,602	(890)	(6,807)	10,347		520,910
Beginning Balance (in shares) at Mar. 31, 2020	59,003,470
Increase (Decrease) in Stockholders' Equity
Capital contribution from non-controlling interest						5,139		5,139
Stock based compensation expense	$ 18							18
Repurchase of common shares					(1,996)			(1,996)
Repurchase of common shares (in shares)	(120,921)
Other comprehensive income (loss), net of tax				(640)				(640)
Net income (loss)			19,199			20		19,219
Ending Balance at Jun. 30, 2020	$ 305,676		231,801	(1,530)	$ (8,803)	15,506		542,650
Ending Balance (in shares) at Jun. 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						(653)		(653)
Repurchase of common shares (in shares)	0
Dividends ($0.08 per share)			(9,422)					(9,422)
Other comprehensive income (loss), net of tax				251				251
Net income (loss)			27,420			(439)		26,981
Ending Balance at Jun. 30, 2021	$ 296,873		273,214	(1,221)		19,649		$ 588,515
Ending Balance (in shares) at Jun. 30, 2021	58,882,549							58,882,549
Beginning Balance at Mar. 31, 2021	$ 296,873		253,701	(1,210)		18,740		$ 568,104
Beginning Balance (in shares) at Mar. 31, 2021	58,882,549
Increase (Decrease) in Stockholders' Equity
Capital contribution from non-controlling interest						1,443		1,443
Capital distribution to non-controlling interest						(334)		(334)
Dividends ($0.08 per share)			(4,711)					(4,711)
Other comprehensive income (loss), net of tax				(11)				(11)
Net income (loss)			24,224			(200)		24,024
Ending Balance at Jun. 30, 2021	$ 296,873		$ 273,214	$ (1,221)		$ 19,649		$ 588,515
Ending Balance (in shares) at Jun. 30, 2021	58,882,549							58,882,549