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Discontinued Operations - Changes in Future Remaining Lease Obligations Discontinued Operations (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Discontinued Operations and Disposal Groups [Abstract]        
Balance, Beginning of Period $ 50,240 $ 41,219 $ 44,084 $ 46,298
Charges Incurred (173) [1] 257 [1] 13,436 [1] 1,211 [1]
Net Cash Payments (6,581) (3,224) (18,637) (9,192)
Other 150 [2]   4,753 [2] (65) [2]
Balance, End of Period $ 43,636 $ 38,252 $ 43,636 $ 38,252
[1] Includes charges for newly vacated spaces and subsequent adjustments for accretion, revised estimates and variances between estimated and actual charges, net of any reversals for terminated lease obligations.
[2] Includes existing prepaid rent and deferred rent liability balances for newly vacated spaces that are netted with the losses incurred in the period recorded.