Income Taxes (Details 1) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Effective Income Tax Rate Reconciliation, Amount [Abstract]
Tax benefit at U.S. federal statutory rate	$ (8,977)	$ (11,044)	$ (5,475)
Increase in domestic valuation allowance	11,109	11,626	11,127
State income taxes/(benefit) before valuation allowance, net of federal benefit	(846)	(1,026)	(1,971)
Capital loss limitation	0fcsc_CapitalLossLimitation	0fcsc_CapitalLossLimitation	(817)fcsc_CapitalLossLimitation
Loss on extinguishment of debt	0	0	1,966
Derivative revaluation expense	0	0	8
Warrant revaluation and other finance (income)/expense	(1,375)	369	(7,141)
Other	89	75	(197)
Income Tax Expense (Benefit), Continuing Operations, Discontinued Operations, Extraordinary Items	$ 0	$ 0	$ (2,500)

Capital Loss Limitation.

No definition available.

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- Definition

Amount of increase in domestic valuation allowance during the period.

+ References

No definition available.

+ Details

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- Definition

Income Tax Reconciliation Derivative Revaluation Expense.

+ References

No definition available.

+ Details

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- Definition

Represents the amount pertaining to income tax reconciliation warrant revaluation and other finance (income) expense.

+ References

No definition available.

+ Details

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- Definition

State Income Tax Benefit Before Valuation Allowance Net Of Federal Benefit.

+ References

No definition available.

+ Details

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- Definition

Current period income tax expense or benefit pertaining to a gain (loss) on an extinguishment of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 470

-SubTopic 50

-Section 40

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6850294&loc=d3e12317-112629

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- Definition

The sum of current income tax expense or benefit and deferred income tax expense or benefit pertaining to continuing operations, tax effect allocated to a disposal group that is classified as a component of the entity reported as a separate component of income before extraordinary items, and tax effect of gains and losses from events or transactions meeting the criteria to be classified as an extraordinary item.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 20

-Section 45

-Paragraph 8

-URI http://asc.fasb.org/extlink&oid=18498875&loc=d3e38976-109324

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- Definition

The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 12

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 13

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 08

-Paragraph h

-Subparagraph 2

-Article 4

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- Definition

Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other adjustments.

+ References

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