XML 35 R57.htm IDEA: XBRL DOCUMENT v2.4.0.8
Income Per Common Share - Additional Information (Detail)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Weighted average number of shares, Restricted stock liability awards 2,800,000 2,900,000 2,900,000
Stock Appreciation Rights (SARs)
     
Stock excluded from earning per share calculation 226,000 854,000 795,000