Annual report pursuant to Section 13 and 15(d)

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

v2.4.1.9
Commitments and Contingencies - Schedule of Changes in Aggregate Product Warranty Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Commitments And Contingencies Disclosure [Abstract]    
Product warranty liability at beginning of period $ 809us-gaap_ProductWarrantyAccrual $ 447us-gaap_ProductWarrantyAccrual
Accruals for warranties issued 1,075us-gaap_ProductWarrantyAccrualWarrantiesIssued 533us-gaap_ProductWarrantyAccrualWarrantiesIssued
Adjustments related to preexisting warranties (including changes in estimates) 406us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease 322us-gaap_ProductWarrantyAccrualPreexistingIncreaseDecrease
Settlements made (in cash or in kind) (1,175)us-gaap_ProductWarrantyAccrualPayments (493)us-gaap_ProductWarrantyAccrualPayments
Product warranty liability at end of period $ 1,115us-gaap_ProductWarrantyAccrual $ 809us-gaap_ProductWarrantyAccrual