Subsequent Event - Additional Information (Detail)	1 Months Ended
	Apr. 22, 2015	Apr. 03, 2015	Jan. 02, 2015
Subsequent Event [Line Items]
Common Stock Shares Authorized		100,000,000	100,000,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Common Stock Shares Authorized	80,000,000
Preferred Stock, Shares Authorized	2,000,000
Dividend Declared Stock Split Authorized	If the proposed stock split and the change in authorized shares are approved by stockholders the cash dividend will be $0.15 per share after giving effect to the split. If the proposed stock split, the change in authorized shares, or both are not approved by stockholders (such that the split does not occur), the cash dividend will be $0.30 per share.
Stockholders' Equity Note, Stock Split	two-for-one stock split