Related Party Transactions (Narrative) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013 Lease Property	Dec. 31, 2012	Dec. 31, 2011
Related Party Transactions [Abstract]
Properties owned	8
Revenue earned	$ 1.0	$ 1.0	$ 1.1
Landlord interest	50.00%
Total rent expense	1.4	1.5	1.8
Amendment to office lease	Jun. 01, 2012
Extension of terms of office lease	5 years
Number of times to renew amended office lease option	2
Number of years required for renewal, amended office lease	10 years
First extension period, Minimum	3 years
First extension period, Maximum	7 years
Annual base rent	1.2
Annual base rent after amendment ceiling	$ 1.4