Summary of Operations and Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2016

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Summary of Allowance for Doubtful Accounts

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

	2016			2015			2014
Balance at January 1,
Allowance for doubtful accounts	$	268		$	291		$	242
Charges to expense		(115	)		116			103
Write-offs of uncollectible accounts, net    of recoveries		(75	)		(139	)		(54	)
Balance at December 31,
Allowance for doubtful accounts	$	78		$	268		$	291

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
Automobile	5
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,
	2016		2015		2014
Weighted average number of basic shares    outstanding		7,226		7,173		7,160
Effect of dilutive securities		152		180		—
Weighted average number of diluted shares    outstanding		7,378		7,353		7,160