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, 2018	$ 451,431	$ 18,625	$ 124,395	$ (8,310)	$ (66,392)	$ 380,431	$ 448,749	$ 2,682
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	15,718					15,574	15,574	144
Other Comprehensive Income (Loss), Net of Tax	10,608			10,608			10,608	0
Treasury Stock, Value, Acquired, Cost Method	1,599				1,599		1,599	0
Dividends, Common Stock, Cash	2,987					2,987	2,987	0
Sharebased Compensation Effect On Stockholders Equity	(1,234)		(1,797)		563		(1,234)	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Jun. 30, 2019	468,142	18,625	121,586	2,298	(67,428)	393,018	468,099	43
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	3,392		1,012				1,012	2,380
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	403						0	403
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Mar. 31, 2019	461,076	18,625	122,055	(2,641)	(65,926)	386,164	458,277	2,799
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	6,874					6,847	6,847	27
Other Comprehensive Income (Loss), Net of Tax	4,939			4,939			4,939	0
Treasury Stock, Value, Acquired, Cost Method	1,508				1,508		1,508	0
Sharebased Compensation Effect On Stockholders Equity	549		543		6		549	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Jun. 30, 2019	468,142	18,625	121,586	2,298	(67,428)	393,018	468,099	43
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	3,392		1,012				1,012	2,380
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	403						0	403
Dividends, Common Stock, Cash, Adjustment	(7)					(7)	(7)	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Dec. 31, 2019	459,712	18,625	122,717	1,212	(69,724)	386,864	459,694	18
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	4,733					4,699	4,699	34
Other Comprehensive Income (Loss), Net of Tax	1,642			1,642			1,642	0
Treasury Stock, Value, Acquired, Cost Method	4,601				4,601		4,601	0
Dividends, Common Stock, Cash	3,246					3,246	3,246	0
Sharebased Compensation Effect On Stockholders Equity	1,087		1,087				1,087	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Jun. 30, 2020	459,324	18,625	123,804	2,854	(74,325)	388,317	459,275	49
Noncontrolling Interest, Decrease from Distributions to Noncontrolling Interest Holders	3						0	3
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Beginning Balance at Mar. 31, 2020	459,898	18,625	123,260	1,101	(71,196)	388,102	459,892	6
Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest	464					421	421	43
Other Comprehensive Income (Loss), Net of Tax	1,753			1,753			1,753	0
Treasury Stock, Value, Acquired, Cost Method	3,129				3,129		3,129	0
Dividends, Common Stock, Cash	206					206	206	0
Sharebased Compensation Effect On Stockholders Equity	544		544				544	0
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest, Ending Balance at Jun. 30, 2020	$ 459,324	$ 18,625	$ 123,804	$ 2,854	$ (74,325)	$ 388,317	$ 459,275	$ 49