Long-Term Loan, Related Party (Details Textual) (USD $)	0 Months Ended		1 Months Ended	12 Months Ended			0 Months Ended				0 Months Ended	12 Months Ended
	Dec. 18, 2013	Aug. 08, 2012	May 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Nov. 17, 2010	Aug. 08, 2012 Amendment One [Member]	Dec. 18, 2013 Amendment Two [Member]	Nov. 17, 2010 Kien Huat Realty Limited [Member]	May 20, 2011 Kien Huat Realty Limited [Member]	May 20, 2011 Bridge Loan [Member]	Dec. 31, 2013 Bridge Loan [Member]	Dec. 31, 2012 Bridge Loan [Member]	Nov. 17, 2010 Bridge Loan [Member]
Debt Instrument [Line Items]
Principal amount of promissory note									$ 1,000					$ 35,000,000
Bridge Loan bears interest rate							7.50%							5.00%
Debt Instrument, Periodic Payment, Principal			17,600,000
Extend maturity date of Bridge loan	Mar. 15, 2015	Dec. 31, 2014									May 17, 2013
Debt instrument loan agreement one-time fee							174,261	25,000
Legal fees and expenses paid								20,000
Percentage of fees as of outstanding principal amount							1.00%
Provisions for Loan Agreement									1,000
Principal sum evidenced by the Note such that the unconverted portion multiple						1.00
Non-assessable shares of Empire's common stock at a conversion rate (shares)									377
Principal amount, which represents a conversion price (usd per share)									$ 2.65
Average of last reported bid prices common stock for consecutive trading days									20 days
Conversion Price in Effect on Measuring Date									200.00%
Short-term bridge loan in the principal amount										17,600,000
Interest expense				$ 1,331,000	$ 1,063,000							$ 1,300,000	$ 1,100,000