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Other Assets (Narrative) (Details) (USD $)
In Thousands, unless otherwise specified
1 Months Ended 3 Months Ended
Sep. 30, 2012
Dec. 31, 2014
Sep. 30, 2014
Mar. 31, 2012
Entity Information [Line Items]        
Termination period 1 year      
Other investment   1,406us-gaap_EquityMethodInvestments $ 1,436us-gaap_EquityMethodInvestments $ 2,000us-gaap_EquityMethodInvestments
Hong Kong        
Entity Information [Line Items]        
Equity method investment ownership percentage   25.00%us-gaap_EquityMethodInvestmentOwnershipPercentage
/ us-gaap_StatementGeographicalAxis
= country_HK
   
Technology licenses, net | Minimum        
Entity Information [Line Items]        
Estimated useful lives   3 years    
Technology licenses, net | Maximum        
Entity Information [Line Items]        
Estimated useful lives   10 years