XML 55 R41.htm IDEA: XBRL DOCUMENT v3.8.0.1
Note 2 - Marketable Securities - Maturities of Available-for-sale Securities (Details)
$ in Thousands
Dec. 31, 2017
USD ($)
Due within one year, amortized cost $ 2,688
Due within one year, estimated fair value 2,688
Due after one year through five years, amortized cost 10,408
Due after one year through five years, estimated fair value 10,350
Total available-for-sale securities, amortized cost 13,096
Total available-for-sale securities, estimated fair value $ 13,038