Note 4 - Financial Statement Details - Restricted Cash and Marketable Securities (Details) - USD ($) $ in Thousands |
Sep. 30, 2019 |
Dec. 31, 2018 |
Sep. 30, 2018 |
---|---|---|---|
Total restricted cash and marketable securities | $ 7,995 | $ 8,755 | $ 8,593 |
Federal Maritime Commission Escrow [Member] | |||
Total restricted cash and marketable securities | 6,476 | 5,823 | |
Certificates of Deposit and Other Restricted Securities [Member] | |||
Total restricted cash and marketable securities | 1,519 | 1,402 | |
Credit Card Processor Reserves [Member] | |||
Total restricted cash and marketable securities | $ 1,530 |