Significant Customers - Schedule of Percentage of Net Sales and Net Accounts Receivables Due from Customers from Continuing Operations (Detail)	9 Months Ended		12 Months Ended
	Mar. 31, 2013	Mar. 31, 2012	Jun. 30, 2012
Significant Customers [Line Items]
Percentage of net sales due to customers	100.00%	100.00%
Percentage of net accounts receivable due from customers	100.00%		100.00%
BMW [Member]
Significant Customers [Line Items]
Percentage of net sales due to customers	17.00%	20.00%
Percentage of net accounts receivable due from customers	15.00%		13.00%
Audi/Volkswagen [Member]
Significant Customers [Line Items]
Percentage of net sales due to customers	13.00%	13.00%
Percentage of net accounts receivable due from customers	10.00%		11.00%
Chrysler [Member]
Significant Customers [Line Items]
Percentage of net sales due to customers	8.00%	7.00%
Percentage of net accounts receivable due from customers	12.00%		7.00%
Other Customers [Member]
Significant Customers [Line Items]
Percentage of net sales due to customers	62.00%	60.00%
Percentage of net accounts receivable due from customers	63.00%		69.00%