Debt (Tables)

6 Months Ended

Jun. 30, 2019

Debt Disclosure [Abstract]

Carrying Amount and Weighted Average Interest Rate of the Company's Debt

The table below summarizes the carrying amount and weighted average interest rate of the Company’s debt (in thousands, except percentages):  

	June 30, 2019					December 31, 2018
	Carrying Amount			Interest Rate		Carrying Amount			Interest Rate
Notes payable to suppliers	$	—		—		$	4,795		—
Total notes payable and short-term borrowing	$	—				$	4,795
Long-term debt, current and non-current:
Borrowing under Wells Fargo Credit Facility	$	31,662		4.33	%	$	35,961		4.41	%
Mitsubishi Bank loans	10,310			1.05% -1.45%		11,094			1.05% -1.45%
Mitsubishi Bank and Yamanashi Chou Bank loan	6,468			1.1	%	6,898			1.1	%
Finance lease liability	317					—
Unaccreted discount and issuance costs	(528		)			(602		)
Total long-term debt, net of unaccreted discount and issuance costs	$	48,229				$	53,351
Reported as:
Current portion of long-term debt	$	3,048				$	2,897
Long-term debt, net of current portion	45,181					50,454
Total long-term debt, net of unaccreted discount and issuance costs	$	48,229				$	53,351

Maturities of Long-term Debt

As of June 30, 2019, maturities of total long-term debt were as follows (in thousands):

2019 (remaining six months)	$	1,607
2020	3,204
2021	3,211
2022	34,863
2023	3,116
Thereafter	2,756
	$	48,757