Quarterly report pursuant to Section 13 or 15(d)

Equity-Based Compensation - Additional Information (Detail)

v3.2.0.727
Equity-Based Compensation - Additional Information (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Jun. 30, 2015
Jun. 30, 2014
Dec. 31, 2014
Nov. 02, 2012
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Equity program, description     The Deferred Equity Unit represents the unsecured right to receive one unit of SLP or the equivalent cash value of up to 50% (or such other percentage as may be determined by the Company’s Executive Committee) of SLP’s units issuable upon the vesting of any such Deferred Equity Units and the remaining 50% in units upon the vesting of any such Deferred Equity Units.      
Performance Unit, description     The Performance Unit represents the unsecured right to receive one unit of SLP for every two units of SLP issuable upon the vesting of any such Deferred Equity Units.      
Equity-based compensation $ 104 $ 260 $ 220 $ 774    
Cash distributions on awards 0 0 0 1    
Unrecognized compensation expense related to unvested awards $ 48   $ 48   $ 168  
Recognition period of unrecognized compensation expense related to unvested awards     7 months 21 days   7 months 24 days  
Estimated percentage of awards to be forfeited     10.00%      
Estimated service period     4 years      
2012 Equity Incentive Plan            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Shares reserved for issuance 1,670,960   1,670,960      
Shares reserved for issuance, authorized           1,687,500
Deferred Equity Units            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Vested awards settled in cash     $ 0 30    
Performance Units            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Equity-based compensation $ 62 $ 23 $ 78 $ 65