Notes Payable - Schedule of Annual Repayment Requirements for Credit Facility (Detail) - 2014 Credit Facility [Member] $ in Thousands |
12 Months Ended |
|---|---|
|
Dec. 31, 2015
USD ($)
| |
| Line of Credit Facility [Line Items] | |
| Credit Facility, Principal | $ 15,600 |
| Credit Facility, Interest and Final Payment | 3,897 |
| Credit Facility, Total | 19,497 |
| 2016 [Member] | |
| Line of Credit Facility [Line Items] | |
| Credit Facility, Interest and Final Payment | 1,301 |
| Credit Facility, Total | 1,301 |
| 2017 [Member] | |
| Line of Credit Facility [Line Items] | |
| Credit Facility, Principal | 5,200 |
| Credit Facility, Interest and Final Payment | 1,105 |
| Credit Facility, Total | 6,305 |
| 2018 [Member] | |
| Line of Credit Facility [Line Items] | |
| Credit Facility, Principal | 5,200 |
| Credit Facility, Interest and Final Payment | 670 |
| Credit Facility, Total | 5,870 |
| 2019 [Member] | |
| Line of Credit Facility [Line Items] | |
| Credit Facility, Principal | 5,200 |
| Credit Facility, Interest and Final Payment | 821 |
| Credit Facility, Total | $ 6,021 |