Earnings Per Share (Tables)

3 Months Ended

Mar. 31, 2013

Earnings Per Share [Abstract]

Computations of basic and diluted net income per share

The computations of basic and diluted net income per share are as follows:

	Three Months Ended March 31,
(in thousands, except per share amounts)	2013	2012
Basic:
Net income attributable to GAMCO Investors, Inc.'s shareholders	$22,545	$23,836
Weighted average shares outstanding	25,742	26,415
Basic net income attributable to GAMCO Investors, Inc.'s shareholders per share	$0.88	$0.90
Diluted:
Net income attributable to GAMCO Investors, Inc.'s shareholders	$22,545	$23,836
Weighted average share outstanding	25,742	26,415
Dilutive stock options and restricted stock awards	16	118
Total	25,758	26,533
Diluted net income attributable to GAMCO Investors, Inc.'s shareholders per share	$0.88	$0.90