Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2016	Dec. 31, 2015
Current Assets:
Receivables, allowance for doubtful accounts	$ 700	$ 649
Property and Equipment, accumulated depreciation	266,022	259,501
Capitalized Software, accumulated amortization	$ 270,313	$ 259,358
SEI Investments shareholders' equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	750,000,000	750,000,000
Common stock, shares issued	161,908,000	163,733,000
Common stock, shares outstanding	161,908,000	163,733,000

Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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For each balance sheet presented, the amount of accumulated amortization for capitalized computer software costs.

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