Annual report pursuant to Section 13 and 15(d)

Subsequent Event - Additional Information (Detail)

Subsequent Event - Additional Information (Detail) (Subsequent Event, Bookt LLC, USD $)
In Millions, unless otherwise specified
1 Months Ended
Jan. 31, 2014
Subsequent Event | Bookt LLC
Subsequent Event [Line Items]  
Business acquisition, purchase price $ 14.0
Business acquisition, cash paid 6.0
Business combination, deferred cash payment amount 1.0
Length of time after acquisition date of deferred cash payment to be made 2 years
Business combination, additional future cash payment amount $ 7.0