CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (USD $) In Thousands, unless otherwise specified	Total	Common Stock	Treasury Stock	Paid in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Non-controlling Interests
Balances at Dec. 31, 2010	$ 124,740	$ 118	$ (10,923)	$ 105,038	$ (5,826)	$ (65)	$ 36,398
Increase (Decrease) in Stockholders' Equity
Net earnings	12,510				6,153		6,357
Change in net unrealized gain on securities available for sale, net of tax	69					115	(46)
Foreign currency translation adjustments	2,020					1,363	657
Stock-based compensation expense	371			371
Sales of subsidiary shares in noncontrolling interests	691			484			207
Investments in majority-owned entities	524						524
Distributions to noncontrolling interests	(10,729)						(10,729)
Balances at Jun. 30, 2011	130,196	118	(10,923)	105,893	327	1,413	33,368
Balances at Dec. 31, 2011	137,403	119	(10,923)	106,330	18,391	(1,941)	25,427
Increase (Decrease) in Stockholders' Equity
Net earnings	12,525				9,852		2,673
Change in net unrealized gain on securities available for sale, net of tax	513					498	15
Foreign currency translation adjustments	(766)					(526)	(240)
Issuance of common stock under stock-based compensation plans		2		(2)
Stock-based compensation expense	494			494
Deconsolidation of majority-owned entity (see Note 3)	(8,473)						(8,473)
Investments in majority-owned entities	10						10
Distributions to noncontrolling interests	(5,682)						(5,682)
Balances at Jun. 30, 2012	$ 136,024	$ 121	$ (10,923)	$ 106,822	$ 28,243	$ (1,969)	$ 13,730