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Summary of Quarterly Results of Operations (Parenthetical) (Detail) (USD $)
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3 Months Ended | 12 Months Ended | ||||
|---|---|---|---|---|---|---|
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Dec. 31, 2013
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Sep. 30, 2013
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Dec. 31, 2012
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Sep. 30, 2012
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Dec. 31, 2013
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Dec. 31, 2012
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| Quarterly Financial Information [Line Items] | ||||||
| Integration of Syndicated and other acquisition related expenses | $ 1,500,000 | $ 555,000 | ||||
| Goodwill and other asset impairments | 22,000,000 | 22,012,000 | ||||
| Deferred tax assets valuation allowances | 22,996,000 | 16,074,000 | 14,500,000 | 22,996,000 | 16,074,000 | |
| Deferred tax assets additional valuation allowances | $ 1,600,000 | $ 6,900,000 | ||||