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Commitments and Contingencies - Additional Information (Detail) (USD $)
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1 Months Ended | 1 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | ||||||||
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Aug. 31, 2012
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Dec. 31, 2012
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Dec. 31, 2011
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Mar. 31, 2011
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Jan. 31, 2011
Compensatory damages
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Jul. 09, 2009
Compensatory damages
Sedona Corporation [Member]
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Jun. 16, 2012
Compensatory damages
Triad [Member]
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Aug. 31, 2012
Compensatory damages
Triad [Member]
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Jul. 31, 2012
Compensatory damages
Securities America
Numbers
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Jun. 30, 2012
Compensatory damages
Securities America
Numbers
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Feb. 29, 2012
Compensatory damages
Securities America
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Dec. 31, 2011
Pending Litigation
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Jul. 09, 2009
Punitive Damages [Member]
Sedona Corporation [Member]
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| Loss Contingencies [Line Items] | |||||||||||||
| Deferred rent | $ 1,977,000 | $ 2,333,000 | |||||||||||
| Damages sought by plaintiff | 442,000 | 660,000 | 3,800,000 | 800,000 | 941,000 | 730,000 | 400,000 | ||||||
| Total investment amount | 12,000,000 | 3,900,000 | |||||||||||
| Award against Triad | 242,000 | 260,000 | |||||||||||
| Accrued Liabilities | $ 27,000 | $ 650,000 | |||||||||||
| Loss Contingency, Number of Plaintiffs | 8 | 2 | |||||||||||