Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2015

Changes in Allowance for Doubtful Accounts

For the years ended December 31, 2015, 2014 and 2013, changes in the allowance for doubtful accounts were as follows (in thousands):

	2015			2014			2013
Balance at beginning of year	$	282		$	575		$	294
Provision charged to selling, general and administrative expenses		285			30			301
Allowance resulting from acquisitions		5			52			117
Write-offs, net of recoveries of amounts previously reserved		(29	)		(352	)		(159	)
Divestiture of JK Lasers		(30	)		—			—
Exchange rate changes		(13	)		(23	)		22
Balance at end of year	$	500		$	282		$	575

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,
	2015		2014		2013
Revenue	$	25,599	$	23,013	$	16,269
Income from operations	$	7,362	$	7,434	$	4,720
Net income	$	6,925	$	6,627	$	3,745

Summary of Financial Information of Laser Quantum - Balance Sheet

	December 31,
	2015		2014
Total assets (1)	$	30,159	$	25,423
Total liabilities	$	2,552	$	2,482

(1) Total assets at December 31, 2015 and 2014 included cash and cash equivalent of $21.0 million and $17.1 million, respectively.