XML 67 R18.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Commitments and Contingencies | 12 Months Ended
--- | ---
Dec. 31, 2014
Commitments and Contingencies |
Commitments and Contingencies | 11. Commitments and Contingencies On May 1, 2012, we entered into a commercial building lease agreement. The sixty month lease, which commenced on August 10, 2012, provides for the lease of approximately 6,000 square feet of space in Cambridge, Massachusetts. Base annual rent is initially set at approximately $22,000 per month with an annual increase of 3%. From April 2011 through April 2012, we leased office space from a significant stockholder. There was no formal lease arrangement with the stockholder. In May 2012 we entered into an additional commercial building sublease agreement. The 24 month sublease, which commenced on August 26, 2013, provides for the lease of 1,900 square feet of space also in Cambridge, Massachusetts. Base rent is approximately $4 thousand per month with an annual increase of 3%. In June 2014, we entered into a commercial building lease agreement. The seventeen and a half month lease, which commenced on July 15, 2014, provides for the lease of an additional approximately 5,800 square feet of space in Cambridge, Massachusetts. Base annual rent is initially $27,272 per month with an annual increase of approximately 1.8%. Future minimum lease payments as of December 31, 2014 are as follows (in thousands):
Year |  |  |
2015 |  | $ | 646 |
2016 |  |  | 292 |
2017 |  |  | 173 |
2018 |  |  | — |
2019 |  |  | — |
​ | ​ | ​ | ​ | ​
|  | $ | 1,111 |
​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​
Rent expense is recorded straight-line over the operating lease term, with deferred rent included on the balance sheet in other liabilities. Rent expense for the years ended December 31, 2014, 2013 and 2012 amounted to $0.6 million, $0.4 million, and $0.2 million, respectively.

X
- Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for commitments and contingencies. + 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 210.5-02.25) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6449706&loc=d3e16207-108621 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6398077&loc=d3e12565-110249 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 440 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25287-109308 + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration