Preferred Stock Issuance (Details) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended
	Jun. 30, 2004 Onex Corporation	Jun. 30, 2004 Series A convertible preferred stock item	Mar. 31, 2004 Series A convertible preferred stock	Jun. 23, 2004 Series A convertible preferred stock	Mar. 10, 2004 Common share
Preferred Stock Issuance
Shares issued		48,095
Number of investment funds to whom shares issued		4
Purchase price per share (in dollars per share)		$ 1,050
Proceeds from issuance of shares		$ 50.5
Conversion ratio			100
Share price (in dollars per share)					$ 10.50
Net proceeds from the transaction		46.6
Issuance costs, including transaction fees		3.9
Transaction fee	$ 0.5
Liquidation preference (in dollars per share)				$ 1,050