Note 13 - Supplemental Balance Sheet Information (in thousands) (Details) - Accounts receivable (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross	$ 19,128	$ 21,630
Less allowance for doubtful accounts	91	216
Accounts receivable, net	19,037	21,414
Trade Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross	13,407	18,011
Unbilled [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross	5,354	3,577
Non-trade [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts Receivable, Gross	$ 367	$ 42