Summary of Operations and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Summary of Allowance for Doubtful Accounts

Our allowance for doubtful accounts activity is summarized as follows (in thousands):


	2014			2013			2012
Balance at January 1,
Allowance for doubtful accounts	$	242		$	381		$	452
Charges to expense		103			300			195
Write-offs of uncollectible accounts, net of recoveries		(54	)		(439	)		(266	)
Balance at December 31,

Allowance for doubtful accounts	$	291		$	242		$	381

Summary of Property, Equipment and Software Over Estimated Useful Life

Depreciation of property, equipment and software is calculated using either straight-line or accelerated methods over estimated useful lives of the related assets or lease terms, as follows:


		Years
Buildings		39
Office furniture and fixtures		7
Computer hardware and software		3-10
Aircraft		20
Leasehold improvements		Shorter of lease term or estimated useful life

Summary of Basic and Diluted Common Shares Outstanding

Basic and diluted shares outstanding are summarized as follows (in thousands):


	Year Ended December 31,
	2014		2013		2012
Weighted average number of basic shares outstanding		7,160		7,105		7,723
Effect of dilutive securities		0		292		140

Weighted average number of diluted shares outstanding		7,160		7,397		7,863