Earnings Per Share - Additional Information (Detail) - shares
|3 Months Ended|
Mar. 31, 2018
Mar. 31, 2017
|Antidilutive Securities Excluded from Computation of Earnings Per Share, Shares||1,682,110||1,682,110|
Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU
No definition available.