Quarterly report pursuant to Section 13 or 15(d)

Real Estate Held for Sale and Impairment Charges - Additional Information (Detail)

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Real Estate Held for Sale and Impairment Charges - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
0 Months Ended 3 Months Ended 9 Months Ended
Jun. 06, 2014
Sep. 30, 2014
Sep. 30, 2014
Real Estate [Abstract]      
Proceeds from sale of real estate $ 11,400   $ 11,162
Gain on sale of real estate 1,200   1,240
Impairment loss   $ 280 $ 14,238
Expiration period of property lease     2017-01
Extended period of lease on property     2 years