CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands	Total	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Non-controlling Interest
Balance (in shares) at Dec. 31, 2016	74,342,826	74,342,826
Balance at beginning period at Dec. 31, 2016	$ 686,799	$ 572,040	$ 94,746	$ 2,507	$ 0	$ 17,506
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Capital contribution from non-controlling interest	188					188
Capital distribution to non-controlling interest	(1,530)					(1,530)
Issuance of common stock for director’s fees (in shares)		5,334
Issuance of common stock for director’s fees	$ 47	$ 47
Repurchase of common shares (in shares)	(7,811,937)	(7,811,937)
Repurchase of common shares	$ (135,995)				(135,995)
Other comprehensive loss	(3,698)			(3,698)
Net income	$ 20,943		21,075			(132)
Balance (in shares) at Sep. 30, 2017	66,536,223	66,536,223
Balance at period end at Sep. 30, 2017	$ 566,754	$ 572,087	$ 115,821	$ (1,191)	$ (135,995)	$ 16,032