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Share-based Compensation - Additional Information (Detail) | 12 Months Ended
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Dec. 31, 2016 plan shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of incentive plans | plan | 3
Number of shares of common stock to be granted under equity incentive awards | 1,500,000
Shares available for issuance under the Plan | 646,664
Stock options, expiration term from date of grant | 10 years
Minimum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Period of continuous service | 3 years
Minimum [Member] | Restricted stock awards [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Stock options, expiration term from date of grant | 3 years
Maximum [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Period of continuous service | 5 years
Maximum [Member] | Restricted stock awards [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Stock options, expiration term from date of grant | 5 years

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- Definition Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Authorized For Future Issuance + References No definition available. + Details
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- Definition Share Based Compensation Arrangement By Share Based Payment Award Number Of Shares Available For Issuance + References No definition available. + Details
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- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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