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Business Combination - Additional Information (Detail) (Meridian [Member], 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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Meridian [Member]
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| Loans At Acquisition Date [Line Items] | |||
| Total fair value of the purchase price consideration | $ 2,800,000 | ||
| Initial cash consideration paid | 1,600,000 | ||
| Purchase price of business acquisition | 1,750,000 | ||
| Net working capital adjustment | 164,000 | ||
| Increase of cash consideration paid by the Company | 1,200,000 | ||
| Additional possible earnings based on financial performance | 2,800,000 | ||
| Selling and administrative expense | $ 231,000 | $ 1,100,000 | |