LINE OF CREDIT, SHORT TERM DEBT AND BANK ACCEPTANCE NOTES (Line of Credit) (Details) - USD ($) $ in Thousands	1 Months Ended					9 Months Ended		12 Months Ended
	Jun. 30, 2015	Apr. 30, 2015	Dec. 31, 2014	Jul. 31, 2014	Mar. 31, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Line of Credit Facility [Line Items]
Repayment of short-term loans						$ 6,242	$ 7,404
CITIC [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity					$ 15,700	15,700
Credit exposure					5,800	5,800
Amount outstanding					$ 1,000	4,900
Interest rate			6.69%		7.08%			6.69%
Restricted cash deposit						$ 8,800
Expiration						Mar. 31, 2016
Beginning maturity date						Nov. 01, 2015
Ending maturity date						Mar. 31, 2016
Debt instrument maturity period			1 year		1 year
Face amount			$ 900					$ 900
CITIC [Member] | Minimum [Member]
Line of Credit Facility [Line Items]
Required cash deposit						50.00%
CITIC [Member] | Maximum [Member]
Line of Credit Facility [Line Items]
Required cash deposit						100.00%
Taizhou Bank [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity			2,400					2,400		$ 4,100
Amount outstanding			$ 1,100					$ 1,100
Expiration								Jan. 01, 2015
Beginning maturity date						Feb. 01, 2015
Ending maturity date						Apr. 30, 2015
China Everbright Bank [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 7,200								$ 9,200
Credit exposure	$ 3,600					$ 3,600			$ 4,600
Amount outstanding						7,200
Interest rate				7.20%
Restricted cash deposit						$ 3,600
Required cash deposit	50.00%								50.00%
Expiration		Apr. 30, 2016				Jan. 31, 2015
Debt instrument maturity period				11 months
Face amount				$ 1,200
ICBC [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity					$ 5,200
Credit exposure					$ 5,200	$ 3,900
Amount outstanding						$ 4,700
Interest rate, minimum						5.00%
Interest rate, maximum						6.90%
Available borrowing capacity						$ 1,300
Restricted cash deposit						$ 800
Expiration						Mar. 31, 2017
Beginning maturity date						Oct. 01, 2015
Ending maturity date						Jul. 31, 2016