Consolidated Statements of Equity (USD $) In Thousands, except Share data	Common Stock [Member] Restricted Stock Units (RSUs) [Member]	Common Stock [Member]	Treasury Stock [Member] Restricted Stock Units (RSUs) [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member] Restricted Stock Units (RSUs) [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member] Restricted Stock Units (RSUs) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member] Restricted Stock Units (RSUs) [Member]	Retained Earnings [Member]	Noncontrolling Interest [Member] Restricted Stock Units (RSUs) [Member]	Noncontrolling Interest [Member]	Restricted Stock Units (RSUs) [Member]	Total
Balance at Dec. 31, 2012		$ 205		$ (26)		$ 14,738		$ (382)		$ (1,696)		$ 1,896		$ 14,735
Balance, share (in Shares) at Dec. 31, 2012		20,470,000		14,000
Share-based compensation						538								538
Share-based compensation, share (in Shares)		25,000
Exercise of stock options		2				122								124
Exercise of stock options, share (in Shares)		186,000												202,233
Sale of non-controlling interest in subsidiaries												20		20
Change in non-controlling interest						3						(123)		(120)
Other changes to non-controlling interest												52		52
Purchase of treasury shares				(392)										(392)
Purchase of treasury shares, share (in Shares)				200,000
Reissued treasury shares				62		(62)
Reissued treasury shares, share (in Shares)				(32,000)
Other comprehensive loss								(649)						(649)
Net Income										3,350		898		4,248
Balance at Dec. 31, 2013		207		(356)		15,339		(1,031)		1,654		2,743		18,556
Balance, share (in Shares) at Dec. 31, 2013		20,681,000		182,000
Share-based compensation						655								655
Exercise of stock options				187		(133)								54
Exercise of stock options, share (in Shares)				(95,000)										453,522
Change in non-controlling interest												720		720
Other changes to non-controlling interest												(112)		(112)
Net cash settlement of stock options						(187)				(152)				(339)
Purchase of treasury shares				(169)										(169)
Purchase of treasury shares, share (in Shares)				115,000										332,235
Reissued treasury shares			155		(155)
Reissued treasury shares, share (in Shares)			(80,000)
Other comprehensive loss							(525)						(525)
Net Income									3,268		1,103		4,371	4,371
Balance at Dec. 31, 2014	$ 207		$ (183)		$ 15,519		$ (1,556)		$ 4,770		$ 4,454		$ 23,211	$ 23,211
Balance, share (in Shares) at Dec. 31, 2014	20,681,000		122,000