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Debt (Tables)

9 Months Ended

Sep. 30, 2019

Debt

Schedule of components of convertible notes

The components of the convertible notes are as follows (in thousands):

​	​	​	​	​	​	​	​	​	​	​	​
​	​	​	​	​	​	Carrying Amount,					​
​	​	Interest Rates	​	​	​	September 30,		​	December 31,		​
Debt		September 30, 2019		Maturities		2019			2018
1.25% Convertible Senior Notes due 2020		1.25	%	2020	​	$	18,080	​	$	17,434	​
​	​	​	​	​	​	​	18,080	​	​	17,434	​
Less current portion	​	​	​	​	​		—	​	​	—	​
​	​	​	​	​	​	$	18,080	​	$	17,434	​

​

Schedule of carrying amount and fair value of convertible notes

The carrying amount and fair value of our convertible notes are as follows (in thousands):

​

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​

​

​

​

​

​

​

September 30, 2019

​

December 31, 2018

​

​

Carrying

​

​

Carrying

​

​

​

​

Amount

​

Fair Value

​

Amount

​

Fair Value

​

1.25% Convertible Senior Notes due 2020

​

$

18,080

​

$

28,427

​

$

17,434

​

$

25,073

​

​

​

$

18,080

​

$

28,427

​

$

17,434

​

$

25,073

​

​

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Tabular disclosure of information pertaining to carrying amount and estimated fair value of short-term and long-term debt instruments or arrangements, including but not limited to, identification of terms, features, and collateral requirements.

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- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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