Consolidated Balance Sheets (Parentheticals) (USD $)	Dec. 31, 2013	Dec. 31, 2012
Common Stock, Number of Shares, Par Value and Other Disclosures
Common stock, par value
Common stock, shares authorized	75,000,000	75,000,000
Common stock, shares issued	39,149,000	39,277,000
Common stock, shares outstanding	39,149,000	39,277,000
Preferred Stock, Number of Shares, Par Value and Other Disclosures
Preferred stock, par value
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0