XML 22 R24.htm IDEA: XBRL DOCUMENT v2.4.0.8
Equity Plans (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 0 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Incentive Plan [Member]
Jun. 30, 2013
Employee Stock Purchase Plan (ESPP) [Member]
Jun. 30, 2012
Employee Stock Purchase Plan (ESPP) [Member]
Jun. 30, 2013
Employee Stock Purchase Plan (ESPP) [Member]
Jun. 30, 2012
Employee Stock Purchase Plan (ESPP) [Member]
Jun. 30, 2013
Dividend Reinvestment and Stock Purchase Plan (DRSPP) [Member]
Jun. 30, 2012
Dividend Reinvestment and Stock Purchase Plan (DRSPP) [Member]
Jun. 30, 2013
Dividend Reinvestment and Stock Purchase Plan (DRSPP) [Member]
Jun. 30, 2012
Dividend Reinvestment and Stock Purchase Plan (DRSPP) [Member]
Jun. 30, 2013
Restricted Stock and Deferred Restricted Stock [Member]
Jun. 30, 2012
Restricted Stock and Deferred Restricted Stock [Member]
Jun. 30, 2013
Restricted Stock and Deferred Restricted Stock [Member]
Jun. 30, 2012
Restricted Stock and Deferred Restricted Stock [Member]
Jun. 30, 2013
Stock Options [Member]
Jun. 30, 2012
Stock Options [Member]
Jun. 30, 2013
Stock Options [Member]
Jun. 30, 2012
Stock Options [Member]
Apr. 24, 2013
Restricted Stock Units (RSUs) [Member]
Jan. 02, 2013
Restricted Stock Units (RSUs) [Member]
vesting_installment
Apr. 23, 2013
Common Stock [Member]
Mar. 25, 2013
Common Stock [Member]
Jun. 30, 2013
Dividend Equivalent Rights [Member]
Jun. 30, 2012
Dividend Equivalent Rights [Member]
Jun. 30, 2013
Dividend Equivalent Rights [Member]
Jun. 30, 2012
Dividend Equivalent Rights [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                                          
Remaining shares available for issuance under the Incentive Plan         1,161,225                                                
Shares issuable upon exercise of Incentive Plan awards         321,380                                                
Compensation costs charged to income $ 242 $ 100 $ 589 $ 283   $ 0 $ 0 $ 58 $ 49         $ 242 $ 100 $ 531 $ 234                        
Excess tax benefits realized from share options exercised and stock issuance 65 43 95 43                   65 35 95 35 0 8 0 8                
Proceeds from the exercise of stock options and similar instruments 21 96 366 405   0 0 328 278 21 21 38 52         0 75 0 75                
Unrecognized compensation costs           12   12           855   855   0   0                  
Recognition period for unrecognized compensation cost                               1 year 8 months 16 days                          
Number of equity instruments granted                                           2,667 23,840 3,634 3,918        
Number of equal successive installments for vesting of stock awards                                             3            
Grant date fair value of equity instruments granted                                           $ 25.58 $ 25.08            
Liability accrued for Dividend Equivalent Rights                                                   31 32 65 66
Decrease to retained earnings for compensation cost related to Dividend Equivalent Rights                                                   31 32 65 66
Purchase price of common stock under ESPP, percent               85.00%                                          
Maximum percentage of base compensation employees can designate for stock purchases under ESPP           10.00%   10.00%                                          
Number of shares authorized for issuance under the plan           270,400   270,400   3,000,000   3,000,000                                  
Plan expense           $ 37 $ 28 $ 58 $ 45                                        
Number of shares issued under the DRSPP                   825 896 1,444 2,198