Long-Term Debt - Convertible Senior Notes (Details) - USD ($)
$ in Thousands |
|
3 Months Ended |
6 Months Ended |
|
|
May 01, 2020 |
Jun. 30, 2020 |
Jun. 30, 2019 |
Jun. 30, 2020 |
Jun. 30, 2019 |
Dec. 31, 2019 |
May 05, 2015 |
| Carrying amount of Notes on the balance sheet: |
|
|
|
|
|
|
|
| Purchases of Convertible Notes |
|
|
|
$ (88,961)
|
$ (33,915)
|
|
|
| Convertible Debt |
|
|
|
|
|
|
|
| Carrying amount of Notes on the balance sheet: |
|
|
|
|
|
|
|
| Purchases of Convertible Notes |
$ (69,200)
|
|
|
(69,242)
|
0
|
|
|
| Senior Notes |
|
|
|
|
|
|
|
| Debt Instrument [Line Items] |
|
|
|
|
|
|
|
| Stated interest rate |
|
|
|
|
|
|
250.00%
|
| Repurchased face amount |
|
$ 89,100
|
$ 34,300
|
89,100
|
34,300
|
|
|
| Repayments of debt |
|
|
|
89,000
|
33,900
|
|
|
| Gain (loss) on extinguishment of debt |
|
0
|
513
|
166
|
711
|
|
|
| Carrying amount of Notes on the balance sheet: |
|
|
|
|
|
|
|
| Convertible senior notes, principal amount |
|
0
|
|
0
|
|
$ 158,295
|
|
| Unamortized debt discount |
|
0
|
|
0
|
|
(1,667)
|
|
| Unamortized debt issuance costs |
|
0
|
|
0
|
|
(330)
|
|
| Convertible senior notes, net |
|
0
|
|
0
|
|
$ 156,298
|
|
| Contractual coupon interest |
|
144
|
1,064
|
1,063
|
2,265
|
|
|
| Debt discount amortization |
|
184
|
1,321
|
1,196
|
2,726
|
|
|
| Amortization of debt issuance costs |
|
36
|
261
|
236
|
539
|
|
|
| Interest expense |
|
$ 364
|
$ 3,159
|
$ 2,662
|
$ 6,241
|
|
|
| Interest on Convertible Debt, Net of Tax |
$ 900
|
|
|
|
|
|
|