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Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2013
Commitments and Contingencies Disclosure [Abstract]  
Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]
As of December 31, 2013, future minimum lease payments under noncancelable operating leases are as follows:
 
Duration
 
Amount
 
 
 
(in thousands)
 
 
 
 
 
 
January 1, 2014~December 31, 2014
 
$
1,724
 
January 1, 2015~December 31, 2015
 
 
745
 
January 1, 2016~December 31, 2016
 
 
603
 
January 1, 2017~December 31, 2017
 
 
472
 
January 1, 2018~December 31, 2018
 
 
265
 
January 1, 2019~December 31, 2024
 
 
967
 
 
 
$
4,776