Promissory Note - Short-Term -Additional Information (Details) (USD $)	1 Months Ended	9 Months Ended
	Feb. 28, 2014 Tranches	Sep. 30, 2014 NotesPayable	Dec. 31, 2013
Disclosure Debt Additional Information Details [Line Items]
Number of outstanding notes payable		2
Promissory Note		$ 11,185,000	$ 6,496,000
Convertible subordinate note issued	50,000,000	50,000,000
Number of tranches	2
Convertible subordinated note maturity term		5 years
Convertible subordinated note deemed advanced	25,000,000
Debt instrument, convertible, conversion price	$ 0.7164
Long-term debt, description		The note is subject to mandatory prepayment upon (i) the Company’s issuance of capital stock or incurrence of indebtedness, the proceeds of which the Company does not apply to repayment of senior indebtedness or (ii) any capital markets debt issuance to the extent the net proceeds of such issuance exceed $250.0 million.
Minimum threshold proceeds from capital market debt issuance for mandatory prepayment option	250,000,000
Promissory Note To Allied
Disclosure Debt Additional Information Details [Line Items]
Notes payable maximum borrowing capacity during extended period		25,000,000
Promissory note extended maturity date, description		Promissory Note was amended to extend the maturity date by one year to July 2015
Promissory note extended maturity date		Jul. 31, 2015
Promissory note extended maturity period		1 year
Promissory Note		$ 11,200,000
London Interbank Offered Rate (LIBOR)
Disclosure Debt Additional Information Details [Line Items]
Debt instrument, basis spread on variable rate	5.00%
London Interbank Offered Rate (LIBOR) | Promissory Note To Allied
Disclosure Debt Additional Information Details [Line Items]
Debt instrument, basis spread on variable rate		2.00%