CONDENSED CONSOLIDATED STATEMENTS OF EQUITY - USD ($) shares in Thousands, $ in Thousands	Total	Common stock	Additional paid-in capital	Retained earnings	Accumulated other comprehensive loss	Treasury stock, at cost	Non-controlling interests
Balance at Dec. 31, 2014	$ 41,443	$ 25,413	$ 91,509	$ 367,967	$ 0	$ (444,495)	$ 1,049
Balance (in shares) at Dec. 31, 2014		25,413
Increase (Decrease) in Equity
Net income	89,151			86,694			2,457
Other comprehensive loss, net of tax	0
Distributions to non-controlling interest holders	(2,144)						(2,144)
Share-based compensation expense	3,258		3,258
Exercise of stock options	332			(2,054)		2,386
Issuance of restricted shares for CastleLine acquisition	14,427			(21,612)		36,039
Repurchase of shares	(48,971)					(48,971)
Balance at Sep. 30, 2015	97,496	$ 25,413	94,767	430,995	0	(455,041)	1,362
Balance (in shares) at Sep. 30, 2015		25,413
Balance at Dec. 31, 2015	52,270	$ 25,413	96,321	369,270	0	(440,026)	1,292
Balance (in shares) at Dec. 31, 2015		25,413
Increase (Decrease) in Equity
Net income	51,050			49,077			1,973
Other comprehensive loss, net of tax	(2,156)				(2,156)
Distributions to non-controlling interest holders	(1,637)						(1,637)
Share-based compensation expense	4,692		4,692
Exercise of stock options	8,876			(58,912)		67,788
Repurchase of shares	(34,321)					(34,321)
Balance at Sep. 30, 2016	$ 78,774	$ 25,413	$ 101,013	$ 359,435	$ (2,156)	$ (406,559)	$ 1,628
Balance (in shares) at Sep. 30, 2016		25,413