Note 4 - Goodwill and Intangible Assets (Detail) - Summary of changes in the carrying amount of goodwill (USD $)	1 Months Ended				6 Months Ended	12 Months Ended
	Sep. 30, 2011	Apr. 30, 2011	Feb. 28, 2011	Feb. 28, 2010	Sep. 30, 2011	Dec. 31, 2012	Dec. 31, 2011
Balance						$ 57,730,000	$ 55,133,000
MIV contingent consideration earned	117,000	2,400,000	1,600,000	172,000	2,600,000		2,550,000
OCS correcting entries							106,000
Foreign Currency Translation						69,000	(59,000)
Balance						$ 57,799,000	$ 57,730,000