Leases - Summary of Operating Leases (Detail) $ in Thousands |
12 Months Ended |
|---|---|
|
Dec. 31, 2016
USD ($)
| |
| Operating Leases Of Lessee [Line Items] | |
| Monthly Payment | $ 100 |
| Residual Value | $ 1,454 |
| Lease Inception, December 29, 2015 [Member] | |
| Operating Leases Of Lessee [Line Items] | |
| Lease Term | 60 months |
| Monthly Payment | $ 15 |
| Residual Value | $ 173 |
| Lease Inception, January 19, 2016 [Member] | |
| Operating Leases Of Lessee [Line Items] | |
| Lease Term | 60 months |
| Monthly Payment | $ 37 |
| Residual Value | $ 639 |
| Lease Inception, February 15, 2016 [Member] | |
| Operating Leases Of Lessee [Line Items] | |
| Lease Term | 60 months |
| Monthly Payment | $ 24 |
| Residual Value | $ 320 |
| Lease Inception, March 3, 2016 [Member] | |
| Operating Leases Of Lessee [Line Items] | |
| Lease Term | 60 months |
| Monthly Payment | $ 24 |
| Residual Value | $ 322 |