BUSINESS SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Industry Segment	Jun. 30, 2013	Dec. 31, 2013
BUSINESS SEGMENT INFORMATION [Abstract]
Number of industry in which entity operates			1
Number of reportable operating segments			3
Total segment sales [Abstract]
Net Sales	$ 99,439	$ 93,981	$ 182,085	$ 157,009
Income from operations [Abstract]
Income from operations	3,714	1,659	6,595	232
Total Assets:
Assets excluding unallocated goodwill	457,309		457,309		308,141
Unallocated Goodwill	37,534		37,534		0
Assets	494,843		494,843		308,141
Power Solutions [Member]
Total segment sales [Abstract]
Net Sales	7,200		7,200
Total Assets:
Assets	181,400		181,400
Acquired Companies [Member]
Total segment sales [Abstract]
Net Sales	19,700	22,200	37,600	22,200
Reportable operating segments [Member]
Total segment sales [Abstract]
Net Sales	117,923	106,928	210,160	178,999
Reportable operating segments [Member] | Acquired Companies [Member]
Total segment sales [Abstract]
Net Sales	26,918	22,180	44,794	22,180
Income from operations [Abstract]
Income from operations	2,673	3,700	3,666	3,691
North America [Member] | Reportable operating segments [Member]
Total segment sales [Abstract]
Net Sales	39,405	32,301	70,859	61,523
Income from operations [Abstract]
Income from operations	(1,617)	(2,012)	(734)	(3,495)
Total Assets:
Assets excluding unallocated goodwill	175,953		175,953		117,261
North America [Member] | Reportable operating segments [Member] | Array [Member]
Total segment sales [Abstract]
Net Sales	1,903	0	3,544	0
Income from operations [Abstract]
Income from operations	(175)	0	(682)	0
North America [Member] | Reportable operating segments [Member] | Power Solutions [Member]
Total segment sales [Abstract]
Net Sales	5,037	0	5,037	0
Income from operations [Abstract]
Income from operations	(1,125)	0	(1,125)	0
North America [Member] | Reportable operating segments [Member] | Acquired Companies [Member]
Total segment sales [Abstract]
Net Sales	6,940	0	8,581	0
Income from operations [Abstract]
Income from operations	(1,300)	0	(1,807)	0
Asia [Member] | Reportable operating segments [Member]
Total segment sales [Abstract]
Net Sales	61,968	64,036	111,860	96,760
Income from operations [Abstract]
Income from operations	4,715	3,776	6,388	3,112
Total Assets:
Assets excluding unallocated goodwill	202,476		202,476		148,780
Asia [Member] | Reportable operating segments [Member] | TRP [Member]
Total segment sales [Abstract]
Net Sales	17,227	21,788	32,831	21,788
Income from operations [Abstract]
Income from operations	3,710	3,596	5,110	3,587
Asia [Member] | Reportable operating segments [Member] | Power Solutions [Member]
Total segment sales [Abstract]
Net Sales	357	0	357	0
Income from operations [Abstract]
Income from operations	(162)	0	(162)	0
Asia [Member] | Reportable operating segments [Member] | Acquired Companies [Member]
Total segment sales [Abstract]
Net Sales	17,584	21,788	33,188	21,788
Income from operations [Abstract]
Income from operations	3,548	3,596	4,948	3,587
Europe [Member] | Reportable operating segments [Member]
Total segment sales [Abstract]
Net Sales	16,550	10,591	27,441	20,716
Income from operations [Abstract]
Income from operations	616	(105)	941	615
Total Assets:
Assets excluding unallocated goodwill	78,880		78,880		42,100
Europe [Member] | Reportable operating segments [Member] | TRP [Member]
Total segment sales [Abstract]
Net Sales	555	392	1,186	392
Income from operations [Abstract]
Income from operations	128	104	228	104
Europe [Member] | Reportable operating segments [Member] | Power Solutions [Member]
Total segment sales [Abstract]
Net Sales	1,839	0	1,839	0
Income from operations [Abstract]
Income from operations	297	0	297	0
Europe [Member] | Reportable operating segments [Member] | Acquired Companies [Member]
Total segment sales [Abstract]
Net Sales	2,394	392	3,025	392
Income from operations [Abstract]
Income from operations	425	104	525	104
Intersegment Elimination [Member]
Total segment sales [Abstract]
Net Sales	$ (18,484)	$ (12,947)	$ (28,075)	$ (21,990)