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Convertible Notes (Tables)

12 Months Ended

Dec. 31, 2018

Convertible Notes

Schedule of components of convertible notes

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

						Carrying Amount
		Interest Rates				December 31,
Debt		December 31, 2018		Maturities		2018			2017
0.375% Convertible Senior Notes due 2018		0.375	%	2018		$	—		$	7,393
1.25% Convertible Senior Notes due 2020		1.25	%	2020			17,434			16,608
							17,434			24,001
Less current portion							—			7,393
						$	17,434		$	16,608

Schedule of annual maturities of convertible notes

Annual maturities of all convertible notes are as follows (in thousands):

2019		$	—
2020			19,094
2021			—
2022			—
Thereafter			—
		$	19,094

Schedule of carrying amount and fair value of convertible notes

The carrying amount and fair value of our convertible notes as of the dates shown were as follows (in thousands):

		December 31,
		2018						2017
		Carrying						Carrying
		Amount			Fair Value			Amount			Fair Value
0.375% Convertible Senior Notes due 2018		$	—		$	—		$	7,393		$	14,129
1.25% Convertible Senior Notes due 2020			17,434			25,073			16,608			35,431
		$	17,434		$	25,073		$	24,001		$	49,560

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