Business Combination (Details) - USD ($) $ in Thousands			1 Months Ended	3 Months Ended
	Apr. 16, 2015	Jan. 02, 2015	Nov. 30, 2015	Mar. 31, 2016	Mar. 31, 2015
Business Acquisition [Line Items]
Acquisition-related costs					$ 140
Revenue				$ 99,145	81,384
Tunable Laser Product Lines From EMCORE Corporation [Member]
Business Acquisition [Line Items]
Total consideration	$ 17,000	$ 17,500		16,982
Cash consideration paid		1,500		1,500
Issuance of notes to the seller of acquired business	$ 15,500	$ 16,000		15,482
Acquisition-related costs				900
Tunable Laser Product Lines From EMCORE Corporation [Member] | Pro Forma [Member]
Business Acquisition [Line Items]
Acquisition-related costs					100
Revenue				19,000	12,300
Tunable Laser Product Lines From EMCORE Corporation [Member] | Intersegment Eliminations [Member] | Pro Forma [Member]
Business Acquisition [Line Items]
Revenue				$ 0	$ 0
EigenLight Corporation
Business Acquisition [Line Items]
Cash consideration paid			$ 400