XML 41 R30.htm IDEA: XBRL DOCUMENT v3.5.0.2
Incentive Plans (Details) - shares
shares in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2016
Dec. 31, 2015
Sep. 30, 2015
Incentive Plans [Abstract]      
Number of stock options granted (in shares) 0   0
Number of stock options outstanding (in shares) 0 0  
Common stock reserved for issuance [Line Items]      
Common shares reserved for issuance (in shares) 4,430    
1993 Stock Incentive Plan [Member]      
Common stock reserved for issuance [Line Items]      
Common shares reserved for issuance (in shares) 4,320    
Other Employee Benefit Plan [Member]      
Common stock reserved for issuance [Line Items]      
Common shares reserved for issuance (in shares) 110