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Subsequent Event - Additional Information (Details) - USD ($) $ / shares in Units, $ in Thousands |  | 3 Months Ended
--- | --- | ---
Apr. 11, 2017 | Mar. 31, 2017 | Mar. 31, 2016
Subsequent Event [Line Items] |  |  |
Net proceeds from offering |  | $ 3,099 | $ 1,213
Subsequent Event [Member] | Follow-on Offering [Member] |  |  |
Subsequent Event [Line Items] |  |  |
Common stock shares sold | 5,228,750 |  |
Public offering price | $ 22.95 |  |
Net proceeds from offering | $ 115,100 |  |
Underwriting discounts and commissions | 4,900 |  |
Offering expenses | $ 400 |  |

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- Definition Offering expenses related to the entity's first offering of stock to the public. + References No definition available. + Details
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Balance Type: | debit
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- Definition Underwriting discounts and commissions related to the entity's first offering of stock to the public. + References No definition available. + Details
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Balance Type: | na
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- Definition Number of new stock issued during the period. + 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(29)) -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 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 3: 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(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
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- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
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- Details
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- Details
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