v2.4.0.8
G. Fair Value of Financial Instruments (Details-Summary) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2013
Dec. 31, 2012
Assets:    
Cash and cash equivalents $ 22,006 $ 10,723
Restricted cash 775 503
Short term investments 7,970 1,034
Total assets 30,751 12,260
Liabilities:    
Interest rate swap   11
Bank acceptance payable 2,347 1,521
Total liabilities 2,347 1,532
Fair Value, Inputs, Level 1 [Member]
    
Assets:    
Cash and cash equivalents 22,006 10,723
Restricted cash 775 503
Short term investments 7,970 0
Total assets 30,751 11,226
Liabilities:    
Interest rate swap   0
Bank acceptance payable 0 0
Total liabilities 0 0
Fair Value, Inputs, Level 2 [Member]
    
Assets:    
Cash and cash equivalents 0 0
Restricted cash 0 0
Short term investments 0 1,034
Total assets 0 1,034
Liabilities:    
Interest rate swap   11
Bank acceptance payable 2,347 1,521
Total liabilities 2,347 1,532
Fair Value, Inputs, Level 3 [Member]
    
Assets:    
Cash and cash equivalents 0 0
Restricted cash 0 0
Short term investments 0 0
Total assets 0 0
Liabilities:    
Interest rate swap   0
Bank acceptance payable 0 0
Total liabilities $ 0 $ 0