v2.4.0.8
Stock Based Compensation (Narrative) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
9 Months Ended 0 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended 36 Months Ended 9 Months Ended
Sep. 30, 2013
Sep. 30, 2013
Equity Plan
Aug. 08, 2013
Equity Plan
Restricted LP Units
Employee
Sep. 30, 2013
Equity Plan
Restricted LP Units
Employee
Sep. 30, 2012
Equity Plan
Restricted LP Units
Employee
Sep. 30, 2013
Equity Plan
Common Class A
Sep. 30, 2013
Manger Equity Plan
Sep. 30, 2013
PFG Plan
PFG
Sep. 30, 2012
PFG Plan
PFG
Sep. 30, 2013
PFG Plan
PFG
Sep. 30, 2012
PFG Plan
PFG
Sep. 30, 2013
PFG Plan
PFG
Dec. 31, 2012
PFG Plan
PFG
Oct. 14, 2010
PFG Plan
PFG
Sep. 30, 2013
Common stock
Common Class A
Sep. 30, 2013
Common stock
Equity Plan
Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                                
Stock-based compensation to directors for services rendered, shares                             4,360 4,360
Stock-based compensation to directors for services rendered $ 30                             $ 30
Number of shares authorized   700,000         1,325,635                  
Shares available for future issuance   137,664       2,000,000 134,629           583,300 546,136    
Shares that are used to pay taxes on behalf of the employees   7,414                            
Anniversary date           Aug. 08, 2023                    
Units granted       19,310               564,092        
Grant date fair value (in dollars per share)     $ 134,000                          
Award vesting period (in years)       3 years                        
Share-based compensation expense       241 113     16 15 49 27          
Nonvested, weighted average grant date fair value               $ 2.64   $ 2.64   $ 2.64 $ 4.05      
Total unrecognized compensation cost       $ 412       $ 106 $ 150 $ 106 $ 150 $ 106        
Unrecognized compensation cost, period of recognition       2 years 0 months 20 days           1 year 7 months 6 days