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H. NOTES PAYABLE AND LONG-TERM DEBT - NARRATIVE 2 (Details)
$ in Thousands
1 Months Ended 12 Months Ended
Jun. 25, 2016
Jun. 24, 2016
Feb. 19, 2016
USD ($)
Jun. 30, 2015
Dec. 31, 2016
TWD
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2016
USD ($)
Repayments of outstanding balance           $ 163,068 $ 121,386 $ 50,733  
Interest rate on line of credit description         not less than the LIBOR borrowing rate plus 1.0%, divided by 0.946 for U.S not less than the LIBOR borrowing rate plus 1.0%, divided by 0.946 for U.S      
Bank acceptance notes outstanding             2,998   $ 307
Unused borrowing capacity             37,700   75,800
Restricted cash, investments or security deposit associated with loan facilities             $ 12,600   1,700
Construction Loan 1                  
Interest rate on line of credit description         LIBOR Borrowing Rate plus 2.0% LIBOR Borrowing Rate plus 2.0%      
London Interbank Offered Rate (LIBOR) [Member]                  
Basis spread on variable rate         0.77167% 0.77167% 0.4295%    
Letter of Credit [Member]                  
Revolving line of credit maximum borrowing capacity                 10,000
TAIWAN, PROVINCE OF CHINA | Minimum                  
Maturity dates         6 months 6 months      
TAIWAN, PROVINCE OF CHINA | Maximum                  
Maturity dates         12 months 12 months      
Comprehensive Credit Line Agreement [Member]                  
Revolving line of credit maximum borrowing capacity                 10,000
Revolving line of credit, maturity date         Mar. 15, 2017 Mar. 15, 2017      
Debt maturity date         Mar. 15, 2017 Mar. 15, 2017      
Note payable                 0
Revolving line of credit, maturity date         Apr. 22, 2016 Apr. 22, 2016      
East West Bank and Comerica Bank [Member]                  
Revolving line of credit maximum borrowing capacity                 10,000
Interest rate on line of credit description         LIBOR Borrowing Rate plus 2.0% LIBOR Borrowing Rate plus 2.0%      
Interest rate description LIBOR LIBOR              
Basis spread on variable rate 31.00%                
Term of revolving credit facility   5 years              
East West Bank and Comerica Bank [Member] | Minimum                  
Basis spread on variable rate   2.75%              
East West Bank and Comerica Bank [Member] | Maximum                  
Basis spread on variable rate   3.00%              
East West Bank and Comerica Bank [Member] | Term Loan [Member]                  
Revolving line of credit maximum borrowing capacity                 10,000
Revolving line of credit amount outstanding                 9,500
Revolving line of credit, maturity date         Jun. 30, 2020 Jun. 30, 2020      
Debt maturity date         Jun. 30, 2020 Jun. 30, 2020      
East West Bank and Comerica Bank [Member] | Credit Agreement [Member]                  
Revolving line of credit maximum borrowing capacity                 25,000
Interest rate on line of credit description         LIBOR Borrowing Rate plus 2.75% or 3.0% LIBOR Borrowing Rate plus 2.75% or 3.0%      
East West Bank [Member] | Construction Loan 1                  
Revolving line of credit maximum borrowing capacity                 22,000
Revolving line of credit, maturity date         Sep. 27, 2016 Sep. 27, 2016      
Interest rate on line of credit description         LIBOR Borrowing Rate plus 2.75% LIBOR Borrowing Rate plus 2.75%      
Debt maturity date         Sep. 27, 2016 Sep. 27, 2016      
East West Bank [Member] | Term Loan [Member]                  
Revolving line of credit maximum borrowing capacity                 5,000
Deposit for owners contribution                 11,000
Revolving line of credit amount outstanding                 2,900
CTBC Bank Co. Ltd. [Member]                  
Revolving line of credit maximum borrowing capacity     $ 4,000           10,300
Revolving line of credit amount outstanding                 6,300
Revolving line of credit, maturity date         Feb. 19, 2016 Feb. 19, 2016      
Interest rate on line of credit description     bank's corporate interest rate index plus 0.93% for the secured portion of the credit facility, adjusted monthly. As of the execution of the credit facility, the bank's corporate interest rate index is 0.71%   Bank's corporate interest rate plus 1.5% for unsecured facility and plus 0.93% for secured facility, adjusted monthly, as of execution bank corporate interest rate is 0.71% Bank's corporate interest rate plus 1.5% for unsecured facility and plus 0.93% for secured facility, adjusted monthly, as of execution bank corporate interest rate is 0.71%      
Debt maturity date         Feb. 19, 2016 Feb. 19, 2016      
Note payable                 0
CTBC Bank Co. Ltd. [Member] | Taiwan, New Dollars                  
Revolving line of credit maximum borrowing capacity | TWD         TWD 320,000,000        
E. Sun Commercial Bank [Member] | Credit Agreement [Member]                  
Interest rate on line of credit description         LIBOR plus 1.7% divided by 0.946 LIBOR plus 1.7% divided by 0.946      
E. Sun Commercial Bank [Member] | First Credit Facility [Member]                  
Revolving line of credit maximum borrowing capacity                 2,600
Revolving line of credit, maturity date         Apr. 08, 2016 Apr. 08, 2016      
Debt maturity date         Apr. 08, 2016 Apr. 08, 2016      
E. Sun Commercial Bank [Member] | First Credit Facility [Member] | Taiwan, New Dollars                  
Revolving line of credit maximum borrowing capacity | TWD         TWD 90,000,000        
E. Sun Commercial Bank [Member] | Second Credit Facility [Member]                  
Revolving line of credit maximum borrowing capacity                 4,000
Revolving line of credit amount outstanding                 0
Interest rate on line of credit description         bank's personal monthly time deposit interest rate plus 0.480% bank's personal monthly time deposit interest rate plus 0.480%      
E. Sun Commercial Bank [Member] | Second Credit Facility [Member] | Taiwan, New Dollars                  
Revolving line of credit maximum borrowing capacity | TWD         TWD 120,000,000        
Mega International Commercial Bank [Member] | First Credit Facility [Member]                  
Revolving line of credit maximum borrowing capacity                 4,000
Revolving line of credit amount outstanding                 0
Revolving line of credit, maturity date         Dec. 22, 2015 Dec. 22, 2015      
Interest rate on line of credit description         not less than the LIBOR borrowing rate plus 1.0%, divided by 0.946 for U.S. and other currency borrowings not less than the LIBOR borrowing rate plus 1.0%, divided by 0.946 for U.S. and other currency borrowings      
Debt maturity date         Dec. 22, 2015 Dec. 22, 2015      
Mega International Commercial Bank [Member] | Second Credit Facility [Member]                  
Revolving line of credit maximum borrowing capacity                 2,000
Revolving line of credit amount outstanding                 2,000
Interest rate on line of credit description         not less than the LIBOR borrowing rate plus 1.2%, divided by 0.946 for U.S. dollar borrowings not less than the LIBOR borrowing rate plus 1.2%, divided by 0.946 for U.S. dollar borrowings      
Mega International Commercial Bank [Member] | Second Credit Facility [Member] | Base Rate                  
Basis spread on variable rate         0.76% 0.76%      
Base lending rate plus         1.0 1.0      
Mega International Commercial Bank [Member] | Second Credit Facility [Member] | Base Rate | Minimum                  
Basis spread on variable rate         1.90% 1.90%      
China Construction Bank                  
Revolving line of credit maximum borrowing capacity                 13,200
Revolving line of credit, maturity date         Dec. 31, 2016 Dec. 31, 2016      
Debt maturity date         Dec. 31, 2016 Dec. 31, 2016      
Note payable                 $ 0
Effective interest rate         0.00%       0.00%
Bank acceptance notes outstanding                 $ 300
Chailease Finance Co. Ltd. [Member] | Finance Lease [Member]                  
Note payable                 2,900
Chailease Finance Co. Ltd. [Member] | Finance Lease 1 [Member]                  
Revolving line of credit, maturity date         Jun. 30, 2015 Jun. 30, 2015      
Debt maturity date         Jun. 30, 2015 Jun. 30, 2015      
Revolving line of credit, maturity date         Jun. 30, 2018 Jun. 30, 2018      
Chailease Finance Co. Ltd. [Member] | Finance Lease 1 [Member] | Purchase and Sale Contract and a Finance Lease Agreement                  
Note payable                 3,700
Lease purchase price | TWD         TWD 115,240,903        
Intial payment amount         40,240,903 $ 1,300      
Financial lease term       3 years          
Chailease Finance Co. Ltd. [Member] | Finance Lease 1 [Member] | Purchase and Sale Contract and a Finance Lease Agreement | Minimum                  
Lease payment range price         2,088,804 100      
Chailease Finance Co. Ltd. [Member] | Finance Lease 1 [Member] | Purchase and Sale Contract and a Finance Lease Agreement | Maximum                  
Lease payment range price         TWD 2,364,650 $ 100      
Chailease Finance Co. Ltd. [Member] | Finance Lease 2 [Member]                  
Revolving line of credit, maturity date         Mar. 31, 2016 Mar. 31, 2016      
Debt maturity date         Mar. 31, 2016 Mar. 31, 2016      
Note payable                 5,800
Lease purchase price         TWD 312,927,180 $ 10,100      
Financial lease term         3 years 3 years      
Financial lease Interest rate         4.00% 4.00%      
Chailease Finance Co. Ltd. [Member] | Finance Lease 2 [Member] | Minimum                  
Intial payment amount         TWD 6,772,500 $ 200      
Lease payment range price | TWD         62,927,180        
Chailease Finance Co. Ltd. [Member] | Finance Lease 2 [Member] | Maximum                  
Intial payment amount         TWD 7,788,333 300      
Lease payment range price           $ 2,000      
Revolving Line of Credit | Revolving Line of Credit 2                  
Revolving line of credit maximum borrowing capacity                 10,333
Revolving line of credit, maturity date         Nov. 30, 2016 Nov. 30, 2016      
Debt maturity date         Nov. 30, 2016 Nov. 30, 2016      
Revolving Line of Credit | Revolving Line of Credit 2 | Corporate Interest Rate Index [Member] | Minimum                  
Basis spread on variable rate         1.50% 1.50%      
Revolving Line of Credit | Revolving Line of Credit 3                  
Revolving line of credit maximum borrowing capacity                 6,600
Revolving line of credit, maturity date         Feb. 06, 2017 Feb. 06, 2017      
Debt maturity date         Feb. 06, 2017 Feb. 06, 2017      
Revolving Line of Credit | Revolving Line of Credit 3 | London Interbank Offered Rate (LIBOR) [Member]                  
Basis spread on variable rate         1.70% 1.70%      
Revolving Line of Credit | Revolving Line of Credit 3 | Taiwan Deposit Index [Member]                  
Basis spread on variable rate         0.41% 0.41%      
Revolving Line of Credit | Revolving Line of Credit 4                  
Revolving line of credit maximum borrowing capacity                 6,000
Revolving line of credit, maturity date         Nov. 27, 2016 Nov. 27, 2016      
Debt maturity date         Nov. 27, 2016 Nov. 27, 2016      
Revolving Line of Credit | Revolving Line of Credit 5                  
Revolving line of credit maximum borrowing capacity                 10,000
Revolving line of credit, maturity date         Mar. 15, 2017 Mar. 15, 2017      
Debt maturity date         Mar. 15, 2017 Mar. 15, 2017      
Revolving Line of Credit | Revolving Line of Credit 5 | London Interbank Offered Rate (LIBOR) [Member]                  
Basis spread on variable rate         1.50% 1.50%      
Revolving Line of Credit | Revolving Line of Credit 5 | Taiwan Interbank Offered Rate [Member]                  
Basis spread on variable rate         0.90% 0.90%      
Revolving Line of Credit | East West Bank and Comerica Bank [Member]                  
Revolving line of credit maximum borrowing capacity                 $ 40,000
Revolving line of credit, maturity date         Jun. 24, 2016 Jun. 24, 2016      
Debt maturity date         Jun. 24, 2016 Jun. 24, 2016      
Revolving line of credit, maturity date         Jun. 30, 2018 Jun. 30, 2018