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Restructuring Expenses (Details) (USD $) | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended |  | 9 Months Ended | 12 Months Ended | 21 Months Ended | 3 Months Ended
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Sep. 30, 2014 Operating Lease [Member] | Jun. 30, 2014 Sub Lease 1 [Member] | Sep. 30, 2014 Employee Costs [Member] | Jun. 30, 2014 Facility Closing [Member] Sub Lease 1 [Member] | Sep. 30, 2014 Facility Closing [Member] Sub Lease 2 [Member] | Sep. 30, 2014 Accrued Expenses [Member] | Sep. 30, 2014 Other non-current liabilities [Member] | Sep. 30, 2014 Operating Expense [Member] Employee | Dec. 31, 2013 Operating Expense [Member] Employee | Sep. 30, 2014 Operating Expense [Member] Employee | Jun. 30, 2014 Selling, General and Administrative Expenses [Member] Contract Termination [Member] Sub Lease 1 [Member] | Sep. 30, 2014 Selling, General and Administrative Expenses [Member] Contract Termination [Member] Sub Lease 2 [Member]
Restructuring Cost and Reserve [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Number of positions eliminated |  |  |  |  |  |  |  | 8 | 50 | 58 |  |
Severance costs |  |  |  |  |  |  |  |  | $ 5,300,000 |  |  |
Outstanding lease term |  |  |  | 81 months | 78 months |  |  |  |  |  |  |
Contractual Obligation |  |  |  | 3,600,000 | 3,400,000 |  |  |  |  |  |  |
Sub-lease revenue |  |  |  | 2,600,000 | 2,600,000 |  |  |  |  |  |  |
Net future cash outflow sub lease rental receipts |  |  |  | 1,000,000 | 800,000 |  |  |  |  |  |  |
Restructuring reserve charges | 1,547,000 |  | 1,327,000 | 900,000 | 700,000 |  |  |  |  |  |  |
Contract termination costs related to sub-lease |  |  |  |  |  |  |  |  |  |  | 150,000 | 150,000
Leasehold improvements written off |  | 50,000 |  |  |  |  |  |  |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |  |  |  |  |  |  |  |  |
Restructuring reserve balance | 0 |  | 2,019,000 |  |  | 300,000 | 1,100,000 |  |  |  |  |
Charges | 1,547,000 |  | 1,327,000 | 900,000 | 700,000 |  |  |  |  |  |  |
Restructuring expenses paid | (125,000) |  | (1,990,000) |  |  |  |  |  |  |  |  |
Restructuring reserve balance | $ 1,422,000 |  | $ 1,356,000 |  |  | $ 300,000 | $ 1,100,000 |  |  |  |  |

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- Definition The adjustment to reduce the value of existing agreements that specify the lessee's rights to use the leased property. This expense is charged when the estimates of future profits generated by the leased property are reduced. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228 + Details
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- Definition Amount of other expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Definition Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 + Details
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- Definition Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 5 -Section P -Subsection 3, 4 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (a)(10) -URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920 + Details
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