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Advances and other assets consists (Detail) (USD $)
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Dec. 31, 2012
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Dec. 31, 2011
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|---|---|---|
| Schedule Of Other Assets [Line Items] | ||
| Other assets before allowance | $ 9,786,000 | $ 6,340,000 |
| Less: allowance for uncollectible loans and advances | (350,000) | (200,000) |
| Other Assets | 9,436,000 | 6,140,000 |
| Less: current portion | (3,666,000) | (1,589,000) |
| Advances and other assets, net of current portion | 5,770,000 | 4,551,000 |
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Signing bonuses to independent sales agents
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| Schedule Of Other Assets [Line Items] | ||
| Other Assets | 2,320,000 | 1,914,000 |
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Non-interest bearing advances to independent sales
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| Schedule Of Other Assets [Line Items] | ||
| Other Assets | 400,000 | 425,000 |
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Loans to independent sales agents bearing interest
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| Schedule Of Other Assets [Line Items] | ||
| Other Assets | 2,482,000 | 2,031,000 |
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Sales-type leases
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| Schedule Of Other Assets [Line Items] | ||
| Other Assets | 2,191,000 | 672,000 |
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Due from independent sales agents and employees
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| Schedule Of Other Assets [Line Items] | ||
| Other Assets | $ 2,393,000 | $ 1,298,000 |