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Stock-Based Compensation - Additional Information (Detail) |  | 6 Months Ended |  |
--- | --- | --- | --- | ---
Dec. 20, 2013 shares | Jun. 30, 2016 $ / shares shares | Aug. 01, 2016 Employees | Jun. 30, 2015 shares
Subsequent Events [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Reduction in workforce, number of employees affected | Employees |  |  | 50 |
Equity Incentive Plan [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Shares available for grant | 6,000,000 | 1,257,235 |  |
Increase in percentage of outstanding number of shares of common stock | 4.00% |  |  |
Stock Appreciation Rights (SARs) [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Term of years |  | 10 years |  |
Exercise price | $ / shares |  | $ 240.00 |  |
Percentage of vested grant yearly |  | 25.00% |  |
Percentage of vested grant monthly |  | 75.00% |  |
Number of SARs, outstanding |  | 110,593 |  | 110,593
Vesting period of grant date |  | 3 years |  |
Restricted Stock [Member] | Maximum [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Term of years |  | 10 years |  |
Options [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unexercised vested option forfeiture |  | 3 months |  |
Options [Member] | Maximum [Member] |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Term of years |  | 10 years |  |

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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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