Common Stock - Additional Information 1 (Detail) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended | |||
|---|---|---|---|---|---|
Sep. 30, 2016 |
Sep. 30, 2015 |
Sep. 30, 2016 |
Sep. 30, 2015 |
Dec. 31, 2015 |
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||
| Unrecognized compensation expense related to stock options granted | $ 1.8 | $ 1.8 | $ 1.8 | ||
| Stock Options [Member] | |||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||
| Weighted-average period, restricted stock awards | 1 year 6 months | ||||
| Restricted Stock Unit [Member] | |||||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||||
| Weighted-average period, restricted stock awards | 1 year 7 months 6 days | ||||
| Award vesting period | 4 years | ||||
| Stock based compensation expense (recovery) | (0.1) | $ 0.4 | $ 0.5 | $ 1.0 | |
| Total unrecognized compensation expense related to the Company's restricted stock unit awards | $ 1.2 | $ 1.2 | |||
| X | ||||||||||
- Definition Share based compensation expense (reversal). No definition available.
|
| X | ||||||||||
- Definition Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Definition Unrecognized cost of unvested share-based awards, other than options, awarded to employees as compensation. No definition available.
|
| X | ||||||||||
- Definition Unrecognized cost of unvested options awarded to employees as compensation. No definition available.
|
| X | ||||||||||
- 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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- 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. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|