SELECTED QUARTERLY DATA (UNAUDITED) (Details) (USD $)	3 Months Ended								12 Months Ended
	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2011
Net Revenue	$ 69,781,691	$ 65,872,533	$ 41,730,992	$ 39,512,740	$ 57,311,270	$ 60,016,344	$ 47,093,997	$ 53,102,594	$ 216,897,956	$ 217,524,205	$ 179,717,966
Gross Profit	24,511,243	21,745,705	16,193,533	16,933,373	21,501,677	22,475,339	16,389,485	18,908,732	79,383,854	79,275,233	63,620,035
Income (loss) from operation	17,938,729	16,524,411	9,898,978	11,023,344	14,587,684	15,862,008	10,195,755	13,279,563	55,385,462	53,925,010	42,111,431
Other income (expense)	(251,484)	17,768	118,250	(311,960)	(339,701)	(521,093)	(220,662)	(84,416)	(427,426)	(1,165,872)	(160,186)
Net income (loss)	$ 14,260,661	$ 13,410,659	$ 8,241,328	$ 8,861,400	$ 11,107,950	$ 12,374,361	$ 7,743,878	$ 10,731,636	$ 44,774,048	$ 41,957,825	$ 32,914,101
Earnings (loss) per shares - basic (in shares)	$ 0.51	$ 0.48	$ 0.30	$ 0.32	$ 0.41	$ 0.46	$ 0.29	$ 0.40	$ 1.61	$ 1.56	$ 1.27
Earnings (loss) per shares - diluted (in shares)	$ 0.51	$ 0.48	$ 0.30	$ 0.32	$ 0.41	$ 0.46	$ 0.29	$ 0.40	$ 1.61	$ 1.56	$ 1.27