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Share-Based Compensation Plans - Additional Information (Detail) (USD $)
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12 Months Ended |
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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| Stock Based Compensation [Line Items] |
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|
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| Shares authorized for grants |
500,000 |
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| Contractual life of stock options granted |
5 years |
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| Share based compensation arrangement by sharebased payment award options exercisable number |
98,500 |
112,500 |
94,750 |
| The intrinsic value of these share options outstanding and exercisable |
$ 34,000 |
|
|
| Compensation expense |
49,000 |
126,000 |
148,000 |
| Expected term of Risk-Free Interest Rate |
|
3 years |
3 years |
| Terms of Award |
Restricted share awards generally vest based on two years of continuous service with one-third of the shares vesting immediately upon issuance of the shares and one-third vesting at the end of each of the next two years. |
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| Vesting Period |
2 years |
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| Cost recognized to the restricted shares (in years) |
2 years |
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| Unrecognized compensation expense related to the restricted shares |
13,000 |
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| Fair value of restricted shares vested |
48,000 |
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|
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Options Held [Member] | Stock Awards [Member]
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|
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| Stock Based Compensation [Line Items] |
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|
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| Compensation expense |
|
$ 12,000 |
$ 30,000 |