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v3.3.0.814

Statements of Cash Flows - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2015 | Sep. 30, 2014
Cash flows from operating activities |  |
Net loss | $ (25,349) | $ (15,073)
Adjustments to reconcile net loss to net cash provided by (used in) operating activities |  |
Depreciation and amortization | 768 | 621
Amortization of premium on marketable securities | 642 |
Stock-based compensation | 3,386 | 1,110
Abandonment of capitalized intangible assets | 280 | 496
Gain on disposal of assets | (9) | (1)
Gain on sale of marketable securities available-for-sale | (4) |
Changes in operating assets and liabilities: |  |
Accounts receivable | 2,558 | 40
Interest receivable | (659) |
Prepaid expenses and other assets | (715) | (62)
Accounts payable | 3,417 | (536)
Accrued expenses | 1,608 | 372
Deferred rent | 595 |
Deferred revenue | 43,993 | (2,454)
Net cash provided by (used in) operating activities | 30,511 | (15,487)
Cash flows from investing activities |  |
Purchase of marketable securities | (168,489) |
Purchase of intangible assets | (1,220) | (1,137)
Purchase of property and equipment | (1,724) | (560)
Proceeds from sale of marketable securities available-for-sale | 28,008 |
Proceeds from sale of property and equipment | 9 | 1
Net cash used in investing activities | (143,416) | (1,696)
Cash flows from financing activities |  |
Proceeds from issuance of common stock | 122,906 |
Proceeds from issuance of common stock upon exercise of stock awards | 543 | 8
Proceeds from issuance of common stock under the Employee Stock Purchase Plan | 247 | 130
Common stock issuance cost | (7,702) |
Payments on capital lease obligations |  | (7)
Net cash provided by financing activities | 115,994 | 131
Net increase (decrease) in cash and cash equivalents | 3,089 | (17,052)
Cash and cash equivalents, beginning of period | 54,649 | 77,975
Cash and cash equivalents, end of period | 57,738 | $ 60,923
Supplemental disclosures of non-cash investing activities |  |
Net unrealized loss on marketable securities available for sale | $ 6 |

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- Definition The sum of the periodic adjustments of the differences between securities' face values and purchase prices that are charged against earnings. This is called accretion if the security was purchased at a discount and amortization if it was purchased at premium. As a noncash item, this element is an adjustment to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
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- Definition Amount of unrealized gain (loss) on investments in debt and equity securities classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 + Details
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash -URI http://asc.fasb.org/extlink&oid=6506951 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28358313&loc=d3e6676-107765 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3044-108585 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of cash inflow (outflow) of investing activities, excluding discontinued operations. Investing activity cash flows include making and collecting loans and acquiring and disposing of debt or equity instruments and property, plant, and equipment and other productive assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 26 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3574-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3521-108585 + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + 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 (a) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585 + Details
Name: | us-gaap_ShareBasedCompensation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the increase (decrease) during the reporting period in amount due within one year from a collaboration agreement, defined as a contractual agreement between the company and another entity(referred to as a partner) from which the company is entitled to receive contractual payments. + References No definition available. + Details
Name: | xncr_IncreaseDecreaseCollaborationPartnerReceivable
Namespace Prefix: | xncr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The increase (decrease) during the reporting period relating to deferred rent. + References No definition available. + Details
Name: | xncr_IncreaseDecreaseInDeferredRent
Namespace Prefix: | xncr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration