Condensed Consolidated Statement of Stockholders' Equity - 9 months ended Sep. 30, 2017 - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-in Capital	AOCI Attributable to Parent	Treasury Stock	Retained Earnings	Parent	Noncontrolling Interest
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Dec. 31, 2016	$ 439,256	$ 18,620	$ 126,468	$ (6,964)	$ (17,483)	$ 315,918	$ 436,559	$ 2,697
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	24,500					24,496	24,496	4
Other Comprehensive Income (Loss), Net of Tax, Total	4,620			4,620			4,620	0
Treasury Stock, Value, Acquired, Cost Method	(44,442)				(44,442)		(44,442)	0
Common stock dividend ($.06 per share)	(902)					(902)	(902)
Distributions to noncontrolling interests	(25)							(25)
Adjustments to Additional Paid in Capital, Share-based Compensation, Requisite Service Period Recognition	(115)	5	(333)		213		(115)	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Sep. 30, 2017	$ 422,892	$ 18,625	$ 126,135	$ (2,344)	$ (61,712)	$ 339,512	$ 420,216	$ 2,676