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Debt (Tables)
3 Months Ended
Mar. 31, 2020
Debt Disclosure [Abstract]  
Schedule of carrying amount and weighted average interest rate of the company's debt
The table below summarizes the carrying amounts and weighted average interest rates of the Company’s debt (in thousands, except percentages):  
 March 31, 2020December 31, 2019
 Carrying
Amount
Interest
Rate
Carrying
Amount
Interest
Rate
Long-term debt, current and noncurrent:        
Borrowing under Wells Fargo Credit Facility
$26,596  2.93 %$27,329  3.72 %
Mitsubishi Bank loans
8,803  
1.05% -1.45%
9,255  
1.04%-1.44%
Mitsubishi Bank and Yamanashi Chuo Bank loan
5,616  1.07 %5,868  1.07 %
Total long-term debt41,015  42,452  
Finance lease liability
254  275  
Unaccreted discount and issuance costs
(412)  (446)  
Total long-term debt, net of unaccreted discount and issuance costs
$40,857   $42,281   
Reported as:        
Current portion of long-term debt
$3,066   $3,044   
Long-term debt, net of current portion
37,791   39,237   
Total long-term debt, net of unaccreted discount and issuance costs
$40,857   $42,281   
Schedule of maturities of long-term debt
As of March 31, 2020, maturities of total long-term debt were as follows (in thousands):

2020 (remaining nine months)$2,334  
20213,112  
202229,708  
20233,112  
20242,314  
Thereafter435  
 $41,015