Shareholders' Equity - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2015 Vote shares	Jan. 28, 2015 shares	Dec. 31, 2014 shares
Stockholders Equity Note [Line Items]
Common stock votes per share | Vote	1
Preferred stock, shares authorized	5,000		5,000
Shares repurchased	0
Maximum
Stockholders Equity Note [Line Items]
Board of Directors authorized the repurchase of common stock		2,000,000