SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Dec. 31, 2014

Reconciliation of the Allowance for Doubtful Accounts

Schedule of reconciliation of the allowance for doubtful accounts

A reconciliation of the beginning and ending balances of the allowance for doubtful accounts is as follows (in thousands):

	Year Ended December 31,
	2014			2013			2012
Balance, beginning of the period	$	408		$	503		$	86
Charges to earnings	206			248			406
Write-off of uncollectible accounts receivable	(265		)	(343		)	11
Balance, end of the period	$	349		$	408		$	503

Schedule of depreciation period for each asset category

The following table presents the estimated useful lives for each asset category:

Asset Category	Estimated Useful Lives
Computer equipment and capitalized software	1 to 5 years
Leasehold improvements	Lesser of asset life or life of lease
Furniture and other equipment	3 to 7 years