Quarterly report pursuant to Section 13 or 15(d)

Equity - Additional Information (Detail)

v3.4.0.3
Equity - Additional Information (Detail) - Class A Common Stock
3 Months Ended
Mar. 31, 2016
shares
Equity [Line Items]  
Issuance of common stock options exercises 0
Long-Term Incentive Plan 2009  
Equity [Line Items]  
Issuance of shares for compensation 11,000