Condensed Consolidated Statement of Stockholders' Equity - 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, 2017	$ 434,243	$ 18,625	$ 124,538	$ (4,598)	$ (63,404)	$ 356,383	$ 431,544	$ 2,699
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	23,752					23,653	23,653	99
Other Comprehensive Income (Loss), Net of Tax	(7,015)			(7,015)			(7,015)	0
Treasury Stock, Value, Acquired, Cost Method	(3,817)				(3,817)		(3,817)	0
Dividends, Common Stock, Cash	(2,222)					(2,222)	(2,222)	0
Distributions to noncontrolling interests	(172)						0	(172)
Sharebased Compensation Effect On Stockholders Equity	1,044		741		303		1,044	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Sep. 30, 2018	445,400	18,625	125,279	(11,963)	(66,918)	377,848	442,871	2,529
Other Comprehensive Income (Loss), Net of Tax	(726)
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Sep. 30, 2018	445,400	$ 18,625	$ 125,279	(11,963)	$ (66,918)	377,848	442,871	2,529
Cumulative Effect of New Accounting Principle in Period of Adoption	$ (413)			$ (350)		$ 34	$ (316)	$ (97)