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Commitments and Contingencies (Details Textual) ft² in Thousands | 1 Months Ended | 3 Months Ended
--- | --- | ---
Jun. 30, 2017 USD ($) ft² | Oct. 31, 2016 USD ($) ft² | Jun. 30, 2015 USD ($) | Mar. 31, 2014 USD ($) | Mar. 31, 2016 USD ($)
Loss Contingencies [Line Items] |  |  |  |  |
Tenant improvements | $ 933,000 |  |  |  |
San Diego, California [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Tenant improvements | $ 2,200,000 |  |  |  |
Area leased (in square feet) | ft² |  | 51 |  |  |
Initial lease term |  | 10 years |  |  |
Adjustable rent period |  | 2 years |  |  |
Security deposit |  | $ 95,000 |  |  |
Plymouth Meeting, Pennsylvania [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Increase to monthly payment |  |  |  |  | $ 16,000
Area leased (in square feet) | ft² | 30 |  |  |  |
Initial lease term |  |  |  | 11 years 6 months |
Security deposit | $ 75,000 |  |  | $ 49,000 |
Minimum [Member] | San Diego Office [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Increase to monthly payment |  |  | $ 13,000 |  |
Tenant improvements | 822,000 |  |  |  |
Minimum [Member] | San Diego, California [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Monthly payments under the lease |  | 0 |  |  |
Minimum [Member] | Plymouth Meeting, Pennsylvania [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Monthly payments under the lease | 75,000 |  |  | 0 |
Maximum [Member] | San Diego, California [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Monthly payments under the lease |  | $ 95,000 |  |  |
Maximum [Member] | Plymouth Meeting, Pennsylvania [Member] |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |
Monthly payments under the lease | $ 90,000 |  |  | $ 58,000 |

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- Definition The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8,17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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