Note 3 - Accounts Receivable	12 Months Ended
Dec. 31, 2012
Financing Receivables [Text Block]	3. Accounts Receivable: Accounts receivable are presented net of allowances for doubtful accounts and unissued credits of $2,781 and $2,883 as of December 31, 2012 and 2011, respectively. Bad debt expense totaled $322 in 2012, $1,125 in 2011 and $3,031 in 2010. The Company’s allowance for doubtful accounts is maintained at a level considered appropriate based on historical experience and specific customer collection issues that the Company has identified. Estimations are based upon a calculated percentage of accounts receivable, which remains fairly level from year to year, and judgments about the probable effects of economic conditions on certain customers, which can fluctuate significantly from year to year. The Company cannot guarantee that the rate of future credit losses will be similar to past experience. The Company considers all available information when assessing the adequacy of its allowance for doubtful accounts.

Note 3 - Accounts Receivable

12 Months Ended

Dec. 31, 2012

3. Accounts Receivable:

Accounts receivable are presented net of allowances for doubtful accounts and unissued credits of $2,781 and $2,883 as of December 31, 2012 and 2011, respectively. Bad debt expense totaled $322 in 2012, $1,125 in 2011 and $3,031 in 2010.

The Company’s allowance for doubtful accounts is maintained at a level considered appropriate based on historical experience and specific customer collection issues that the Company has identified. Estimations are based upon a calculated percentage of accounts receivable, which remains fairly level from year to year, and judgments about the probable effects of economic conditions on certain customers, which can fluctuate significantly from year to year. The Company cannot guarantee that the rate of future credit losses will be similar to past experience. The Company considers all available information when assessing the adequacy of its allowance for doubtful accounts.