Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Schedule of Changes in Aggregate Product Warranty Liabilities (Details)

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Commitments and Contingencies - Schedule of Changes in Aggregate Product Warranty Liabilities (Details) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2015
Dec. 31, 2014
Commitments And Contingencies Disclosure [Abstract]    
Product warranty liability at beginning of period $ 1,115 $ 809
Accruals for warranties issued 1,415 1,075
Adjustments related to preexisting warranties (including changes in estimates) 360 406
Settlements made (in cash or in kind) (1,102) (1,175)
Product warranty liability at end of period $ 1,788 $ 1,115