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Notes Payable and Other Noncurrent Liabilities - Notes Payable (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2012
Notes Payable through December 2019 [Member] |
Line of Credit Facility [Line Items] |
Monthly payment of notes payable | $ 556
Interest rate of notes payable | 1.75%
Number of days of bank operating rate to calculate interest on notes payable | 30 days
Interest rate of notes payable, Minimum | 1.96%
Gift Annuities extending through 2019 [Member] |
Line of Credit Facility [Line Items] |
Quarterly payment of notes payable | $ 34
Interest rate of notes payable, Minimum | 10.00%
Notes Payable through March 2013 [Member] |
Line of Credit Facility [Line Items] |
Interest rate of notes payable, Minimum | 8.80%
Interest rate of notes payable, Maximum | 11.00%

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- Definition Number of days of bank operating rate to calculate interest on notes payable. + References No definition available. + Details
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- Details
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