Long-Term Loan, Related Party (Details Textual)		3 Months Ended			6 Months Ended		41 Months Ended
	Nov. 17, 2010 USD ($)	Jun. 30, 2015 USD ($) $ / shares	Mar. 31, 2015 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2015 USD ($) shares $ / shares	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Dec. 31, 2014 $ / shares
Debt Instrument [Line Items]
Principal amount of promissory note	$ 1,000	$ 1,000			$ 1,000
Debt Instrument, Periodic Payment, Principal					17,400,000
Principal sum evidenced by the Note such that the unconverted portion multiple		$ 1.00			$ 1.00
Principal amount, which represents a conversion price (usd per share) | $ / shares		$ 2.6164			$ 2.6164			$ 2.6164
Debt Instrument, Convertible, Conversion Ratio	382.202837				382.202837
Interest expense		$ 644,000		$ 2,933,000	$ 1,323,000	$ 5,975,000
Amendment Three [Member]
Debt Instrument [Line Items]
Debt instrument loan agreement one-time fee			$ 25,000
Legal fees and expenses paid			20,000
Kien Huat Realty Limited
Debt Instrument [Line Items]
Principal amount of promissory note		$ 1,000			1,000
Unconverted Portion of Notes					$ 1,000
Non-assessable shares of Empire's common stock at a conversion rate (shares) | shares					377
Principal amount, which represents a conversion price (usd per share) | $ / shares		$ 2.65			$ 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%			200.00%
Interest Paid							$ 4,100,000
Foreign Entity Affiliate, Interest, Tax Withholding Percentage							30.00%
Interest Paid, Withholding Tax Payable							$ 1,200,000
Withholding Tax Payable, including Interest On Income Tax							$ 1,300,000
Unrecognized Tax Benefits, Interest on Income Taxes Accrued			$ 154,000
Bridge Loan [Member]
Debt Instrument [Line Items]
Interest expense					$ 657,000	$ 653,000