Summary of Financial Information of Laser Quantum - Balance Sheet (Details) - Laser Quantum $ in Thousands	Dec. 31, 2016 USD ($)
Schedule Of Financial Statements Information [Line Items]
Total assets	$ 25,043	[1]
Total liabilities	$ 1,556

[1] Total assets at December 31, 2016 included cash and cash equivalents of $15.5 million.