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Cash Dividends (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified | 6 Months Ended
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Jun. 30, 2014 | Jun. 30, 2013
Dividends [Line Items] |  |
Cash dividend declared | $ 0.10 | $ 0.12
Cash dividends paid | $ 2,837 | $ 3,389
Second Quarter Dividend |  |
Dividends [Line Items] |  |
Cash dividend declaration Date | Jun. 09, 2014 | Jun. 10, 2013
Cash dividend distributed date | Jul. 17, 2014 | Jul. 19, 2013
Cash dividend record date | Jul. 03, 2014 | Jul. 05, 2013
Cash dividend declared | $ 0.05 | $ 0.05
Cash dividends paid | 1,420 | 1,413
First Quarter Dividend |  |
Dividends [Line Items] |  |
Cash dividend declaration Date | Mar. 10, 2014 | Mar. 11, 2013
Cash dividend distributed date | Apr. 18, 2014 | Apr. 19, 2013
Cash dividend record date | Apr. 04, 2013 | Apr. 05, 2013
Cash dividend declared | $ 0.05 | $ 0.07
Cash dividends paid | $ 1,417 | $ 1,976

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- Definition Cash dividend paid. + References No definition available. + Details
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- Details
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- Definition Date the declared dividend will be paid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Definition The per share amount of a dividend declared, but not paid, as of the financial reporting date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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Period Type: | instant

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- Definition Date the dividend to be paid was declared, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Definition Date the holder must own the stock to be entitled to the dividend, in CCYY-MM-DD format. + References No definition available. + Details
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