Revolving Facility (Details) - Revolving Facility - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended | ||||
|---|---|---|---|---|---|---|
Oct. 13, 2018 |
Nov. 02, 2017 |
Sep. 30, 2017 |
Sep. 30, 2017 |
Dec. 31, 2016 |
Nov. 02, 2015 |
|
| Line of Credit Facility [Line Items] | ||||||
| Maximum line of credit capacity | $ 7,500 | |||||
| Interest rate above the otherwise applicable rate upon default of the credit facility | 5.00% | |||||
| Credit facility commitment fee | $ 38 | |||||
| Net borrowings on line of credit | $ 700 | $ 700 | ||||
| Amount outstanding under the credit facility | 700 | 700 | $ 1,300 | |||
| Unused availability | $ 3,400 | $ 3,400 | $ 1,000 | |||
| Subsequent Event | ||||||
| Line of Credit Facility [Line Items] | ||||||
| Credit facility commitment fee | $ 18 | |||||
| Subsequent Event | Minimum | Prime Rate | ||||||
| Line of Credit Facility [Line Items] | ||||||
| Debt Instrument, Basis Spread on Variable Rate | 1.75% | |||||
| Subsequent Event | Maximum | Prime Rate | ||||||
| Line of Credit Facility [Line Items] | ||||||
| Debt Instrument, Basis Spread on Variable Rate | 2.75% | |||||
| Stated interest rate | 4.50% |