XML 125 R111.htm IDEA: XBRL DOCUMENT v3.3.1.900
Fair Value Measurements (Details 1) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Investments in Non-marketable Equity Securities $ 11,211 $ 11,211  
Impairment loss on investment $ 0 309 $ 0
Oculon Optoelectronics Inc [Member]      
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Investments in Non-marketable Equity Securities   0  
Impairment loss on investment   309  
Fair Value, Inputs, Level 1 [Member] | Oculon Optoelectronics Inc [Member]      
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Investments in Non-marketable Equity Securities   0  
Fair Value, Inputs, Level 2 [Member] | Oculon Optoelectronics Inc [Member]      
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Investments in Non-marketable Equity Securities   0  
Fair Value, Inputs, Level 3 [Member] | Oculon Optoelectronics Inc [Member]      
Fair Value Inputs, Assets, Quantitative Information [Line Items]      
Investments in Non-marketable Equity Securities   $ 0