Convertible Senior Notes - Conversion (Details)
|
|
12 Months Ended |
|
Mar. 08, 2018
USD ($)
|
Dec. 31, 2018
USD ($)
item
$ / shares
|
| Convertible Senior Notes |
|
|
| Ownership interest percentage |
|
50.00%
|
| Closing price of the company's stock | $ / shares |
|
$ 1.24
|
| Convertible Senior Notes |
|
|
| Convertible Senior Notes |
|
|
| Conversion ratio, principal amount |
|
$ 1,000
|
| Conversion rates for the notes (in shares) |
|
436.3002
|
| Conversion price, per share | $ / shares |
|
$ 2.29
|
| Trading days | item |
|
20
|
| Consecutive Trading days | item |
|
30
|
| Conversion price (as a percent) |
|
130.00%
|
| Number of business days |
|
5 days
|
| Number of consecutive trading days |
|
5 days
|
| Principal amount (as a percent) |
|
98.00%
|
| Principal amount of the repurchased Convertible Senior Notes(as a percent) |
|
100.00%
|
| Percentage of principal amount to be redeemed |
|
100.00%
|
| Carrying amount of the liability component |
|
$ 58,200,000
|
| Effective interest rate (as a percent) |
|
16.00%
|
| Transaction costs for issuance |
|
$ 4,100,000
|
| Initial purchasers' discount |
$ 3,250,000
|
|
| Other issuance costs |
$ 894,000
|
1,700,000
|
| Transaction costs attributable to the liability component |
|
2,400,000
|
| Transaction costs attributable to the equity component |
|
$ 1,700,000
|
| Remaining life of the Convertible Senior Notes |
|
51 months
|