Note 21 - Quarterly Results of Operations (Unaudited) (Details) - Quarterly Results of Operations (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended																12 Months Ended
	Jun. 30, 2014		Mar. 31, 2014		Dec. 31, 2013		Sep. 30, 2013		Jun. 30, 2013		Mar. 31, 2013		Dec. 31, 2012		Sep. 30, 2012		Jun. 30, 2014		Jun. 30, 2013		Jun. 30, 2012
Quarterly Results of Operations [Abstract]
Net sales	$ 197,340		$ 174,160		$ 166,540		$ 178,140		$ 175,823		$ 160,090		$ 160,866		$ 176,611		$ 716,180	[1]	$ 673,390	[1]	$ 610,586	[1]
Gross profit	64,398		57,572		55,894		60,405		55,988		50,826		54,061		57,320		238,269		218,191		201,736
Net income (loss)	$ 10,047		$ 13,220		$ 10,517		$ 9,082		$ 12,500		$ 9,561		$ 10,961		$ 11,830		$ 42,866		$ 44,848		$ 30,905
EARNINGS PER SHARE (1)
Basic (in Dollars per share)	$ 1.08	[2]	$ 1.05	[2]	$ 0.84	[2]	$ 0.97	[2]	$ 0.98	[2]	$ 0.75	[2]	$ 0.84	[2]	$ 0.09	[2]	$ 3.39		$ 3.57		$ 2.47
Diluted (in Dollars per share)	$ 1.07	[2]	$ 1.04	[2]	$ 0.83	[2]	$ 0.96	[2]	$ 0.97	[2]	$ 0.74	[2]	$ 0.83	[2]	$ 0.91	[2]	$ 3.35		$ 3.51		$ 2.42

[1] Net sales were identified based on geographic location where our products and services were initiated.

[2] Basic and diluted earnings per share are computed independently for each reporting period. Accordingly, the sum of the quarterly earnings per share amounts may not agree to the year-to-date amounts.