Earnings Per Share - Weighted Average Shares and Share Equivalents to Calculate Basic and Diluted Earnings Per Share (Detail) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Earnings Per Share [Abstract]
Weighted average number of shares outstanding used to calculate basic EPS	4,349	4,889	4,408	4,934
Dilutive Securities:
Stock options and restricted share units	146	124	149	133
Weighted average number of shares and share equivalents outstanding used to calculate diluted EPS	4,495	5,013	4,557	5,067