LINE OF CREDIT, SHORT TERM DEBT AND BANK ACCEPTANCE NOTES (Lines of Credit) (Details) - USD ($) $ in Thousands	1 Months Ended				12 Months Ended
	Jun. 30, 2015	Apr. 30, 2015	Jul. 31, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2012
Line of Credit Facility [Line Items]
Repayment of short-term loans					$ 6,157	$ 18,297
CITIC [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity				$ 15,400	3,000	15,400
Credit exposure				5,700	5,700	5,700
Amount outstanding				$ 1,000	$ 2,600
Interest rate				7.08%	5.90%
Restricted cash deposit					$ 6,400
Expiration					Mar. 31, 2016
Beginning maturity date					Mar. 01, 2016
Ending maturity date					Apr. 30, 2016
Debt instrument maturity period				1 year	6 months
CITIC [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Required cash deposit					100.00%
CITIC [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Required cash deposit					50.00%
Taizhou Bank [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity						2,400	$ 4,100
Amount outstanding						$ 1,100
Expiration						Jan. 01, 2015
Beginning maturity date					Feb. 01, 2015
Ending maturity date					Apr. 30, 2015
Everbright Bank [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 7,100				$ 7,100
Credit exposure	$ 3,600				3,500
Amount outstanding					3,500
Interest rate			7.20%
Available borrowing capacity					3,500
Restricted cash deposit					$ 3,500
Required cash deposit	50.00%				50.00%
Expiration		Apr. 30, 2016			Jun. 30, 2016
Debt instrument maturity period			11 months
Face amount			$ 1,200
ICBC [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity				$ 5,100		$ 5,100
Credit exposure					$ 4,600
Amount outstanding					$ 4,600
Interest rate, minimum					5.00%
Interest rate, maximum					6.90%
Available borrowing capacity					$ 500
Restricted cash deposit					$ 800
Expiration					Mar. 31, 2017
Beginning maturity date					Oct. 01, 2015
Ending maturity date					Jul. 31, 2016