Convertible Subordinated Notes (Details) - USD ($)
$ in Thousands |
3 Months Ended |
|
|
|
|
Mar. 31, 2016 |
Mar. 31, 2015 |
Feb. 09, 2016 |
Dec. 31, 2015 |
Sep. 30, 2015 |
Mar. 19, 2014 |
| Debt Instrument [Line Items] |
|
|
|
|
|
|
| Effect of dilutive securities, Convertible junior subordinated debentures (in shares) |
0
|
348,000
|
|
|
|
|
| Carrying Values of Liability and Equity Components, Convertible Subordinated Notes |
|
|
|
|
|
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| Deferred Finance Costs, Net |
$ (1,498)
|
|
|
$ (1,445)
|
|
|
| Amortization of debt issuance costs |
221
|
$ 226
|
|
|
|
|
| Convertible Subordinated Notes [Member] |
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|
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| Debt Instrument [Line Items] |
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|
|
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| Stated interest rate percentage |
|
|
|
|
|
2.75%
|
| Carrying Values of Liability and Equity Components, Convertible Subordinated Notes |
|
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|
|
|
|
| Convertible subordinated notes, principal amount |
143,750
|
|
|
143,750
|
|
$ 143,750
|
| Unamortized discount of liability component |
(24,827)
|
|
|
(25,754)
|
|
|
| Deferred Finance Costs, Net |
(2,645)
|
|
|
(2,769)
|
|
|
| Carrying value of the liability component |
116,278
|
|
$ 143,750
|
115,227
|
|
|
| Equity component carrying value |
17,973
|
|
|
$ 17,973
|
|
|
| Convertible subordinated notes, fair value |
157,900
|
|
|
|
|
|
| Contractual coupon interest expense |
1,000
|
1,000
|
|
|
|
|
| Amortization of debt issuance costs |
100
|
100
|
|
|
|
|
| Accretion of discount, convertible subordinated notes |
$ 900
|
$ 800
|
|
|
|
|
| Effective interest rate percentage |
2.75%
|
6.75%
|
|
|
6.75%
|
|