Quarterly report pursuant to Section 13 or 15(d)

Summary of Significant Accounting Policies (Tables)

v3.5.0.2
Summary of Significant Accounting Policies (Tables)
6 Months Ended
Jun. 30, 2016
Accounting Policies [Abstract]  
Changes in Allowance for Doubtful Accounts
Changes in the allowance for doubtful accounts are as follows:
 
Six Months Ended June 30,
 
2016

2015
Allowance for doubtful accounts, beginning of period
$
3,729

 
$
2,851

Charges to costs and expenses
1,852

 
83

Account write-offs and other
376

 
(256
)
Allowance for doubtful accounts, end of period
$
5,957

 
$
2,678

Estimated Useful Lives of Property and Equipment
Depreciation and amortization of property and equipment are computed on a straight-line basis over the following estimated useful lives:
Asset Classification
 
Estimated Useful Life
Furniture and office equipment
 
Five years
Computer equipment and software costs
 
Three to five years
Leasehold improvements
 
Lesser of term of lease or five years
Automobiles
 
Five years
Land
 
Unlimited
Schedule of Earnings Per Share, Basic and Diluted
When the effects are not anti-dilutive, diluted earnings per share is calculated using the weighted-average outstanding common shares; the dilutive effect of convertible preferred stock, under the “if converted” method; and the treasury stock method with regard to warrants and stock options; all as determined under the treasury stock method.
 
Three Months Ended June 30,
 
Six Months Ended June 30,
 
2016
 
2015
 
2016
 
2015
Net income (loss) attributable to Ameresco, Inc.
$
1,994

 
$
1,991

 
$
3,048

 
$
(2,197
)
Basic weighted-average shares outstanding
46,719,122

 
46,493,162

 
46,730,805

 
46,450,877

Effect of dilutive securities:
 
 
 
 
 
 
 
Stock options
74,228

 
892,250

 

 

Diluted weighted-average shares outstanding
46,793,350

 
47,385,412

 
46,730,805

 
46,450,877