Unaudited Condensed Consolidated Statements of Stockholders' Equity - 3 months ended Mar. 31, 2016 - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in Capital	Retained Earnings	AOCI Attributable to Parent	Treasury Stock	Noncontrolling Interest
Beginning Balance at Dec. 31, 2015	$ 694,905	$ 80	$ 974,264	$ 514,761	$ (60,893)	$ (837,179)	$ 103,872
Beginning Balance (in shares) at Dec. 31, 2015		80,609
Shares issued on vesting of restricted stock (in shares)		83
Shares repurchased on vesting of restricted stock and exercise of stock options	(70)					(70)
Compensation expense in connection with restricted stock and stock options	2,006		2,006
Payments from non-controlling interest holders, net of imputed interest	167						167
Change in redemption value of redeemable non-controlling interest	(1,252)			(1,252)
Change in fair value of available for sale securities	(2,037)				(2,037)
Net income	23,121			18,616			4,505
Tax benefit related to amortization of convertible notes' discount	54		54
Foreign currency translation	12,541				12,541
Distributions to joint ventures	(2,901)						(2,901)
Ending Balance at Mar. 31, 2016	$ 726,534	$ 80	$ 976,324	$ 532,125	$ (50,389)	$ (837,249)	$ 105,643
Ending Balance (in shares) at Mar. 31, 2016		80,692