Earnings Per Share - Numbers of Shares Used in Earnings Per Share Computation (Detail) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Basic:
Weighted average common shares outstanding	42,877	43,105	45,506
Diluted:
Dilutive effect of stock options, stock appreciation rights, restricted stock, restricted stock units and shares held in a rabbi trust	48	43	101
Total weighted average diluted shares outstanding	42,925	43,148	45,607
Anti-dilutive shares excluded from the diluted earnings per share calculation	42		1