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Related Party Transactions (Detail) (USD $) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2013 | Mar. 31, 2012 | Dec. 31, 2012
Management [Member] | Deferred Compensation, Excluding Share-based Payments and Retirement Benefits [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Estimated fair value of life insurance policies | $ 9,000,000 |  | $ 8,700,000
Board of Directors Chairman [Member] | Deferred Compensation, Excluding Share-based Payments and Retirement Benefits [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Payments for life insurance policies | 0 | 0 |
Chief Executive Officer [Member] | Deferred Compensation, Excluding Share-based Payments and Retirement Benefits [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Payments for life insurance policies | 0 | 0 |
Related Customer [Member] | Management [Member] |  |  |
Related Party Transaction [Line Items] |  |  |
Charges to related party | 134,000 | 121,000 |
Related party receivables | 846,000 |  | 907,000
Related party revenues | 296,000 | 345,000 |
Accounts receivable, related party | $ 1,338,000 |  | $ 1,232,000

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- Definition Carrying amount as of the balance sheet date of amounts which could be received based on the terms of the insurance contract upon surrendering life policies owned by the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Technical Bulletin (FTB) -Number 85-4 -Paragraph 2 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 17 -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 4 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=6361293&loc=d3e6812-107765 + Details
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