Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Allowance for Doubtful Accounts

For the years ended December 31, 2014, 2013 and 2012, the allowance for doubtful accounts was as follows (in thousands):

	2014			2013			2012
Balance at beginning of year	$	575		$	294		$	224
Provision charged to selling, general and administrative expenses		30			301			278
Allowance resulting from acquisitions		52			117			—
Write-offs, net of recoveries of amounts previously reserved		(352	)		(159	)		(222	)
Exchange rate changes		(23	)		22			14
Balance at end of year	$	282		$	575		$	294

Laser Quantum

Summary of Financial Information of Laser Quantum - Income Statement

The summarized financial information for Laser Quantum is as follows (in thousands):

	Year Ended December 31,
	2014		2013		2012
Sales	$	23,013	$	16,269	$	13,039
Income from operations	$	7,434	$	4,720	$	3,592
Net income	$	6,627	$	3,745	$	2,215

Summary of Financial Information of Laser Quantum - Balance Sheet

	Year Ended December 31,
	2014		2013
Total assets (1)	$	25,423	$	20,990
Total liabilities	$	2,482	$	4,240

· Total assets at December 31, 2014 and 2013 include cash and cash equivalent of $17.1 million and $13.6 million, respectively.