Income Taxes - Additional Information (Detail) - USD ($)
|
12 Months Ended |
|
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
| Income Taxes Disclosure [Line Items] |
|
|
|
| Increase in valuation allowance |
$ 11,785,000
|
$ 7,710,000
|
|
| Net deferred tax liability, current |
|
651,000
|
|
| Net deferred tax liability, non-current |
|
651,000
|
|
| NOL carry forwards, net of limitations |
47,170,000
|
47,170,000
|
|
| Unrecognized tax benefits |
687,000
|
811,000
|
$ 935,000
|
| Unrecognized tax benefits may be recognized by the end of 2016 |
124,000
|
|
|
| Accrued interest or penalties related to uncertain tax positions |
0
|
0
|
|
| Interest or penalties related to uncertain tax positions |
0
|
0
|
|
| U.S. Federal [Member] |
|
|
|
| Income Taxes Disclosure [Line Items] |
|
|
|
| NOL carryforwards |
$ 55,662,000
|
31,230,000
|
|
| NOL carryforwards, expiration date |
Dec. 31, 2035
|
|
|
| U.S. State [Member] |
|
|
|
| Income Taxes Disclosure [Line Items] |
|
|
|
| NOL carryforwards |
$ 55,502,000
|
31,176,000
|
|
| NOL carryforwards, expiration date |
Dec. 31, 2035
|
|
|
| Foreign [Member] |
|
|
|
| Income Taxes Disclosure [Line Items] |
|
|
|
| NOL carryforwards |
$ 25,627,000
|
$ 25,128,000
|
|