Quarterly report pursuant to Section 13 or 15(d)

Balance Sheer Details - Cash and Investments (Details)

v2.4.1.9
Balance Sheer Details - Cash and Investments (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Mar. 31, 2014
Dec. 31, 2013
Balance Sheet Related Disclosures [Abstract]        
Cash and cash equivalents $ 22,769us-gaap_CashAndCashEquivalentsAtCarryingValue $ 20,696us-gaap_CashAndCashEquivalentsAtCarryingValue $ 28,500us-gaap_CashAndCashEquivalentsAtCarryingValue $ 26,450us-gaap_CashAndCashEquivalentsAtCarryingValue
Short-term investments, available-for-sale 42,173us-gaap_AvailableForSaleSecuritiesCurrent 48,399us-gaap_AvailableForSaleSecuritiesCurrent    
Long-term investments, available-for-sale 16,332us-gaap_AvailableForSaleSecuritiesNoncurrent 10,256us-gaap_AvailableForSaleSecuritiesNoncurrent    
Investments and Cash $ 81,274us-gaap_InvestmentsAndCash $ 79,351us-gaap_InvestmentsAndCash