Subsequent Events - Additional Information (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	12 Months Ended			2 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Feb. 28, 2014 Subsequent Event Total shares repurchased post Q4 to date of filing
Subsequent Event [Line Items]
Repurchases of common stock, shares	128,863	126,021	109,716	9,000
Repurchases of common stock, value				$ 332,000
Average purchase price per share of common stock repurchased during the period				$ 37.75