Note 9 - Options and Equity (Detail) (USD $)	1 Months Ended	3 Months Ended		6 Months Ended
	Jan. 31, 2012	Jun. 30, 2012 Stock Options [Member]	Jun. 30, 2011 Stock Options [Member]	Jun. 30, 2012 IPC Stock Option and Executive Plans [Member]	Jun. 30, 2011 IPC Stock Option and Executive Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period	42,416
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Lower Range Limit (in Dollars per share)	$ 4.74
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range, Upper Range Limit (in Dollars per share)	$ 5.25
Conversion of Stock, Shares Converted	25,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price (in Dollars per share)	$ 7.95
Treasury Stock, Shares	25,000
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period		0	145,177	1,169,985	271,975