CONDENSED CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS’ EQUITY - 6 months ended Jun. 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 December 31, 2016 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	141					141
Issuance of common stock for director’s fees (in shares)		0
Issuance of common stock for director’s fees	$ 19	$ 19
Repurchase of common shares (in shares)	(2,416,089)	(2,416,089)
Repurchase of common shares	$ (40,444)				(40,444)
Other comprehensive loss	(3,451)			(3,451)
Net income	$ 14,802		15,132			(330)
Balance (in shares) at Jun. 30, 2017	71,926,737	71,926,737
Balance at June 30, 2017 at Jun. 30, 2017	$ 657,866	$ 572,059	$ 109,878	$ (944)	$ (40,444)	$ 17,317