Net income per share attributable to common stockholders (Tables)

12 Months Ended

Dec. 31, 2012

Net income per share attributable to common stockholders

Schedule of computation of basic and diluted net income per share attributable to common stockholders

	Years ended December 31,
	2012		2011		2010
	(in thousands)
Numerator:
Net income attributable to common stockholders, basic	$	7,295	$	4,662	$	10,554
Accretion of convertible preferred stock		—		—		5,020
Net income attributable to Boingo Wireless, Inc., diluted	$	7,295	$	4,662	$	15,574
Denominator:
Weighted average common stock, basic		34,774		24,014		5,834
Effect of dilutive convertible preferred stock		—		—		22,846
Effect of dilutive stock options		2,543		3,457		3,204
Effect of dilutive common stock warrants		—		10		15
Weighted average common stock, diluted		37,317		27,481		31,899
Net income per share attributable to common stockholders:
Basic	$	0.21	$	0.19	$	1.81
Diluted	$	0.20	$	0.17	$	0.49

Schedule of outstanding securities not included in computation of diluted net income per share

	Years ended December 31,
	2012		2011		2010
	(in thousands)
Convertible preferred stock		—		7,699		—
Stock options		2,518		2,172		—
Preferred stock warrants		—		26		26
Total		2,518		9,897		26