Summary of Significant Accounting Policies (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Jun. 30, 2012
Revenue Allowance, Activity
Reserve balance at the beginning of the year	$ 17,039	$ 13,564
Actual credits issued related to sales recorded in prior fiscal years	(12,289)	(10,800)
Reserves or (reversals) charged during current fiscal year related to sales in prior fiscal years	(269)	326
Reserves charged to net sales during current fiscal year related to sales in current fiscal year	52,892	47,303
Actual credits issued related to sales recorded in current fiscal year	(38,412)	(33,507)
Reserve balance at the end of the year	18,961	16,886
Reserve balances	100.00%		100.00%
Minimum
Revenue Allowance, Activity
Shelf-life of products	24 months
Maximum
Revenue Allowance, Activity
Shelf-life of products	36 months
Chargebacks
Revenue Allowance, Activity
Reserve balance at the beginning of the year	7,063	5,497
Actual credits issued related to sales recorded in prior fiscal years	(6,584)	(5,213)
Reserves or (reversals) charged during current fiscal year related to sales in prior fiscal years	(461)	(62)
Reserves charged to net sales during current fiscal year related to sales in current fiscal year	37,235	34,292
Actual credits issued related to sales recorded in current fiscal year	(29,176)	(27,488)
Reserve balance at the end of the year	8,077	7,026
Reserve balances	43.00%		41.00%
Rebates
Revenue Allowance, Activity
Reserve balance at the beginning of the year	4,436	2,925
Actual credits issued related to sales recorded in prior fiscal years	(4,000)	(2,985)
Reserves or (reversals) charged during current fiscal year related to sales in prior fiscal years	131	255
Reserves charged to net sales during current fiscal year related to sales in current fiscal year	11,951	10,211
Actual credits issued related to sales recorded in current fiscal year	(7,986)	(5,663)
Reserve balance at the end of the year	4,532	4,743
Reserve balances	24.00%		26.00%
Returns
Revenue Allowance, Activity
Reserve balance at the beginning of the year	5,540	5,142
Actual credits issued related to sales recorded in prior fiscal years	(1,644)	(2,469)
Reserves charged to net sales during current fiscal year related to sales in current fiscal year	2,456	2,444
Reserve balance at the end of the year	6,352	5,117
Reserve balances	33.00%		33.00%
Other
Revenue Allowance, Activity
Actual credits issued related to sales recorded in prior fiscal years	(61)	(133)
Reserves or (reversals) charged during current fiscal year related to sales in prior fiscal years	61	133
Reserves charged to net sales during current fiscal year related to sales in current fiscal year	1,250	356
Actual credits issued related to sales recorded in current fiscal year	$ (1,250)	$ (356)