Accounts Receivable (Details) (USD $)	3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013
Accounts receivable
Gross accounts receivable	$ 50,355,000		$ 43,923,000
Less: reserve	(20,600,000)		(17,500,000)
Less: Allowance for doubtful accounts	(51,000)		(41,000)
Accounts receivable, net	29,749,000		26,413,000
Chargebacks
Accounts receivable
Less: reserve	(8,780,000)		(7,267,000)
Provision for rebates, chargebacks, returns and other deductions	17,700,000	19,000,000
Rebates
Accounts receivable
Less: reserve	(3,502,000)		(2,513,000)
Provision for rebates, chargebacks, returns and other deductions	7,500,000	5,800,000
Returns
Accounts receivable
Less: reserve	(6,955,000)		(6,689,000)
Provision for rebates, chargebacks, returns and other deductions	1,200,000	1,400,000
Other
Accounts receivable
Less: reserve	(1,318,000)		(1,000,000)
Provision for rebates, chargebacks, returns and other deductions	$ 3,900,000	$ 2,400,000