Business Combinations, Percentage of the Return Proceeds Received Payable

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Commitment And Contingencies [Line Items]

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- Definition

Operating lease agreements, expiration date.

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No definition available.

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- Definition

Remaining Loan Commitment

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No definition available.

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- Definition

Unfunded commitments for capital contributions

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No definition available.

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- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
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- Definition

Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a,h)
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Date the credit facility terminates, in CCYY-MM-DD format.

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-Name Accounting Standards Codification
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-Subparagraph (SX 210.5-02.19(b),22(b))
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- Definition

Maximum amount borrowed under the credit facility at any time during the period.

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No definition available.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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- Definition

Amount before allowance of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes deferred interest and fees, undisbursed portion of loan balance, unamortized costs and premiums and discounts from face amounts. Excludes loans and leases covered under loss sharing agreements.

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-Topic 310
-SubTopic 10
-Section 45
-Paragraph 2
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- Definition

The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
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- Definition

Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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-Name Accounting Standards Codification
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- Definition

Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions.

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- Definition

Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions.

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No definition available.

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Commitments and Contingencies - Additional Information (Detail) - USD ($)	2 Months Ended	3 Months Ended		12 Months Ended
	Mar. 31, 2016	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2017	Dec. 31, 2015	Jan. 15, 2016	Jun. 26, 2015
Commitment And Contingencies [Line Items]
Operating lease agreements expiration date		Various dates through 2025
Rental expense relating to operating leases		$ 7,985,000	$ 8,871,000
Unfunded commitments for capital contributions	$ 5,610,000	5,610,000
Investment in private equity funds	83,669,000	83,669,000			$ 86,287,000
Other Commitment			5,500,000
Loans and Leases Receivable, Gross			$ 3,500,000
Remaining Loan Commitment	2,000,000	$ 2,000,000
Loss Contingency, Damages Sought, Value					300,000,000
Protego [Member]
Commitment And Contingencies [Line Items]
Percentage of the return proceeds received payable (as a percent)		90.00%
Private Equity Funds [Member]
Commitment And Contingencies [Line Items]
Investment in private equity funds	27,578,000	$ 27,578,000			26,473,000
Private Equity Funds [Member] \| Discovery Fund [Member]
Commitment And Contingencies [Line Items]
Investment in private equity funds	6,928,000	6,928,000			$ 6,632,000
Private Equity Funds [Member] \| Discovery Fund [Member] \| Protego [Member]
Commitment And Contingencies [Line Items]
Goodwill	4,722,000	4,722,000
Investment in private equity funds	6,928,000	$ 6,928,000
Scenario, Forecast [Member]
Commitment And Contingencies [Line Items]
Subsidiary or Equity Method Investee, Cumulative Percentage Ownership after All Transactions				20.00%
First Republic Bank [Member]
Commitment And Contingencies [Line Items]
Maximum borrowing capacity						$ 50,000,000	$ 75,000,000
Line of Credit Facility, Expiration Date		Jun. 27, 2016
Amount outstanding during period	$ 50,000,000