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Income Taxes - Additional Information (Detail) - USD ($) |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Dec. 31, 2015 | Sep. 30, 2014 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Mar. 31, 2014
Schedule Of Income Tax [Line Items] |  |  |  |  |  |
NOLs expiration period |  |  | 20 years |  |  |
NOLs available for deferred tax asset | $ 4,720,000 |  | $ 4,720,000 | $ 5,244,000 |  |
Deferred tax asset offset by a valuation allowance | 2,051,000 |  | 2,051,000 | 816,000 |  |
Unrecognized stock-based compensation | 17,863,000 |  | 17,863,000 | 101,108,000 |  |
Deferred tax asset for AMT credit | 1,598,000 |  | 1,598,000 |  |  |
Valuation allowance resulting in income tax benefit | 14,071,000 |  | 14,071,000 | 9,490,000 |  | $ 21,221,000
Deferred tax asset resulting from foreign losses | 2,051,000 |  | 2,051,000 | 816,000 |  |
Credit to additional paid-in capital for the amount of NOLs from stock-based compensation |  |  | $ 57,474,000 | $ 21,893,000 |  |
Current baseline operating tax rate |  |  | 41.65% | 16.99% | 0.00% |
Federal statutory rate |  |  | 35.00% | 35.00% | 35.00% |
Uncertain tax positions, interest or penalties amount | 0 |  |  |  |  |
Income tax examination description |  |  | Tax returns filed with each jurisdiction remain open to examination under the normal three-year statute of limitations. |  |  |
Not recorded any deferred taxes on undistributed earnings and profits | 117,000 |  | $ 117,000 |  |  |
Previously Reported [Member] | State Income Tax [Member] |  |  |  |  |  |
Schedule Of Income Tax [Line Items] |  |  |  |  |  |
Current baseline operating tax rate |  | 45.00% |  |  |  |
Restatement Adjustment [Member] | State Income Tax [Member] |  |  |  |  |  |
Schedule Of Income Tax [Line Items] |  |  |  |  |  |
Current baseline operating tax rate |  | 38.00% |  |  |  |
Foreign Subsidiaries [Member] |  |  |  |  |  |
Schedule Of Income Tax [Line Items] |  |  |  |  |  |
NOLs available for deferred tax asset | 6,685,000 |  | 6,685,000 | $ 4,061,000 |  |
Deferred tax asset offset by a valuation allowance | $ 2,051,000 |  | $ 2,051,000 | $ 816,000 |  |

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- Definition Amount, after allocation of valuation allowances and deferred tax liability, of deferred tax asset attributable to deductible differences and carryforwards, netted by jurisdiction and classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31917-109318 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31931-109318 + Details
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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 + Details
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- Definition A brief description of status of the tax examination, significant findings to date, and the entity's position with respect to the findings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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- Definition Amount of expense for interest on an underpayment of income taxes and penalties related to a tax position claimed or expected to be claimed in the tax return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
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