| Lease Agreements (Details) | 3 Months Ended | |
|---|---|---|
| Mar. 31, 2017  USD ($)  ft²  item | Dec. 31, 2014  USD ($)  ft² | |
| Sublease Agreement | ||
| Number of lease renewal periods | item | 2 | |
| Lease renewal term (in years) | 5 years | |
| Area of real estate property (square feet) | ft² | 9,328 | 57,000 | 
| Expected income from sublease | $ 2,500,000 | |
| Loss on sublease | 495,000 | $ 9,300,000 | 
| Beginning Balance | 3,460,000 | |
| Increase in deferred liability | 495,000 | |
| Accretion of deferred liability | 59,000 | |
| Amortization of deferred liability | (887,000) | |
| Ending Balance | $ 3,127,000 | |
| X | ||||||||||
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- Definition Represents the amount of accretion to the deferred liability of sublease arrangements during the period. No definition available. 
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| X | ||||||||||
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- Definition Represents the amount of amortization of deferred liability of sublease arrangements during the period. No definition available. 
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| X | ||||||||||
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- Definition Represents the information pertaining to expected income from sublease. No definition available. 
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| X | ||||||||||
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- Definition Represents the information pertaining to gain (loss) on sublease. No definition available. 
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| X | ||||||||||
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- Definition Represents information pertaining to the increase (decrease) in deferred sublease liability during the period. No definition available. 
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| X | ||||||||||
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- Definition Represents the number of renewal term periods provided by the lessee's leasing arrangement. No definition available. 
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| X | ||||||||||
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- References No definition available. 
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| X | ||||||||||
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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for deferred sublease arrangements. No definition available. 
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| X | ||||||||||
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- Definition Area of a real estate property. No definition available. 
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| X | ||||||||||
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- Definition Term of the lessee's leasing arrangement renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available. 
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