SEGMENT INFORMATION (Segment Reporting) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Segment Reporting Information [Line Items]
Revenue	$ 231,257	$ 198,092
Gross profit	24,325	22,997
Depreciation	12,527	12,957
Capital expenditures	8,843	7,305
Total assets	89,717	93,132
Domestic [Member] | Reportable Geographical Components [Member]
Segment Reporting Information [Line Items]
Revenue	120,928	99,827
Gross profit	13,291	7,396
Depreciation	7,340	7,450
Capital expenditures	5,555	4,757
Total assets	76,224	77,032
Asia Pacific [Member] | Reportable Geographical Components [Member]
Segment Reporting Information [Line Items]
Revenue	81,082	79,683
Gross profit	9,974	16,476
Depreciation	4,193	4,659
Capital expenditures	1,254	1,728
Total assets	10,520	12,779
Latin America [Member] | Reportable Geographical Components [Member]
Segment Reporting Information [Line Items]
Revenue	29,247	18,582
Gross profit	1,060	(875)
Depreciation	994	848
Capital expenditures	2,034	820
Total assets	$ 2,973	$ 3,321