Consolidated Statements of Changes in Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock [Member]	Additional Paid in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income [Member]	Non-controlling Interest [Member]
Beginning Balance at Dec. 31, 2012	$ 128,560	$ 170	$ 56,880	$ 51,880	$ 19,630
Beginning Balance, Shares at Dec. 31, 2012		17,044
Net income (Loss)	17,178			17,178
Dividends declared	(3,129)			(3,129)
Stock option expense	1,437		1,437
Shares issued for option exercises	4,013	$ 4	4,009
Shares issued for option exercises, Shares		496
Restricted stock compensation expense	802	$ 2	800
Restricted Stock compensation expense, Shares		90
Foreign currency translation gain	3,899				3,899
Ending Balance at Dec. 31, 2013	152,760	$ 176	63,126	65,929	23,529
Ending Balance, Shares at Dec. 31, 2013		17,630
Net income (Loss)	8,217			8,217
Dividends declared	(5,131)			(5,131)
Stock option expense	1,274		1,274
Shares issued for option exercises	1,671	$ 2	1,669
Shares issued for option exercises, Shares		152
Shares issued for acquisition	31,717	$ 11	31,706
Shares issued for acquisition, shares		1,087
Restricted stock compensation expense	1,321	$ 1	1,320
Restricted Stock compensation expense, Shares		114
Non-controlling interest	32					$ 32
Foreign currency translation gain	(17,731)				(17,731)
Change in fair value of interest rate hedge	(431)				(431)
Ending Balance at Dec. 31, 2014	173,699	$ 190	99,095	69,015	5,367	32
Ending Balance, Shares at Dec. 31, 2014		18,983
Net income (Loss)	(7,431)			(7,431)
Dividends declared	(6,433)			(6,433)
Stock option expense	915		915
Shares issued for option exercises	$ 2,041	$ 2	2,039
Shares issued for option exercises, Shares	179	179
Shares issued in public offering	$ 173,052	$ 76	172,976
Shares issued in public offering, shares		7,590
Restricted stock compensation expense	2,789	$ 1	2,788
Restricted Stock compensation expense, Shares		115
Stock withheld to cover tax withholdings	(231)		(231)
Stock withheld to cover tax withholdings, Shares		(18)
Foreign currency translation gain	(21,936)				(21,936)
Change in fair value of interest rate hedge	(2,584)				(2,584)
Ending Balance at Dec. 31, 2015	$ 313,881	$ 269	$ 277,582	$ 55,151	$ (19,153)	$ 32
Ending Balance, Shares at Dec. 31, 2015		26,849