Share Repurchase Program - Additional Information (Detail) (USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended	3 Months Ended
	Jan. 31, 2014	Mar. 31, 2014
Statement Of Stockholders Equity [Abstract]
Authorized a share repurchase program	$ 35.0
Common stock shares repurchased		54,000
Cost of common stock shares repurchased		$ 3.4
Shares repurchase program expiration date		Dec. 31, 2015