Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Summary of Ownership Interests in Investments Held Under Fair Value Accounting

A summary of our ownership interests in the investments held under fair value accounting as of December 31, 2018 is presented in the following table:

Limited partnership	Company Direct and Indirect Ownership in Limited Partnership
Managed funds of funds
Strategic Investors Fund, LP	12.6	%
Capital Preferred Return Fund, LP	20.0
Growth Partners, LP	33.0
Managed direct venture funds
CP I, LP	10.7

Maximum Estimated Useful Lives by Asset Classification

The maximum estimated useful lives by asset classification are as follows:

Leasehold improvements	Lesser of lease term or asset life
Furniture and equipment	7 years
Computer software	3-7 years
Computer hardware	3-5 years

Schedule of Changes Due to Adoption of New Revenue Recognition Guidance

The cumulative effect of the changes to our consolidated balance sheets at January 1, 2018, for the adoption of the new revenue standard were as follows:

(Dollars in thousands)	Balance at December 31, 2017		Adjustments Due to Adoption of ASC 606			Balance at January 1, 2018
Accrued interest receivable and other assets:
Accounts receivable	$	55,946	$	(34,340	)	$	21,606
Other liabilities:
Deferred revenue	27,057		(26,321		)	736
Current taxes payable	4,675		(2,217		)	2,458
Stockholders' equity:
Retained earnings	2,866,837		(5,802		)	2,861,035

In accordance with the new revenue standard requirements, the disclosure of the impact of adoption on our consolidated balance sheet at December 31, 2018 and our statement of income for the year ended December 31, 2018, were as follows:

	December 31, 2018
(Dollars in thousands)	As Reported		Balances Without Adoption of ASC 606		Effect of Change Higher/(Lower)
Accrued interest receivable and other assets:
Accounts receivable	$	55,807	$	96,479	$	(40,672	)
Other liabilities:
Deferred revenue	598		28,478		(27,880		)
Current taxes payable	3,330		531		2,799
Stockholders' equity:
Retained earnings	3,791,838		3,799,255		(7,417		)

	Year ended December 31, 2018
(Dollars in thousands, except per share amount)	As Reported		Balances Without Adoption of ASC 606		Effect of Change Higher/(Lower)
Other noninterest income:
Fund management fees	$	23,016	$	25,213	$	(2,197	)
Income tax expense	351,561		352,143		(582		)
Net income available to common stockholders	973,840		975,455		(1,615		)
Diluted earnings per share	18.11		18.14		(0.03		)