XML 17 R29.htm IDEA: XBRL DOCUMENT

Investment Income - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013
Investment And Other Income [Line Items]
Non cash charge on early retirement of convertible senior notes	$ 5.4
Gain on non title related insurance policy proceeds	$ 1.7

Consideration given by issuer of convertible debt to provide an incentive for debt holders to convert the debt to equity securities. The expense is equal to the fair value of all securities and other consideration transferred in the transaction in excess of the fair value of securities issuable pursuant to the original conversion terms.

+ References+ Details