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Pending Acquisitions - Additional Information (Detail) (USD $) | 3 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013
Business Acquisition [Line Items] |  |
Common stock number of shares issued for consideration | 2,000,000 |
Amount of cash consideration | $ 220,000,000 |
Period used to determine volume weighted average price of shares issued in the merger | 10 days |
Targeted Shareholders' Equity At Closing | 87,000,000 |
Other | $ 38,624,000 | $ 41,485,000
Jack Wood [Member] |  |
Business Acquisition [Line Items] |  |
Holding period of common stock received in merger | 1 year |
Donald Wood [Member] |  |
Business Acquisition [Line Items] |  |
Holding period of common stock received in merger | 6 months |

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