Condensed Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Current Assets:
Allowance For Doubtful Receivables And Sales Returns	$ 4,867	$ 4,526
Shareholders' Equity:
Preferred Stock, par value per share	$ 0.02	$ 0.02
Preferred Stock, shares authorized	1,000,000	1,000,000
Preferred Stock, shares issued	0	0
Preferred Stock, shares outstanding	0	0
Common Stock, par value per share	$ 0.375	$ 0.375
Common Stock, shares authorized	60,000,000	60,000,000
Common Stock, shares issued	18,384,306	18,491,524
Common Stock, shares outstanding	18,384,306	18,491,524