COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS

Warranty Expense

The Company's equipment is generally shipped with a one-year warranty against manufacturing defects. The Company establishes reserves for estimated warranty expense when revenue for the related equipment is recognized. The reserve for estimated warranty expense is based upon historical experience and management's estimate of future warranty costs.

The following table reflects the reserve for product warranty activity for the three and six months ended March 28, 2015 and March 29, 2014:



	Three months ended						Six months ended
(in thousands)	March 28, 2015			March 29, 2014			March 28, 2015			March 29, 2014
Reserve for product warranty, beginning of period	$	1,215		$	887		$	1,542		$	1,194
Addition from business combination	547			—			547			—
Provision for product warranty	1,038			352			1,237			500
Product warranty costs paid	(951		)	(354		)	(1,477		)	(809		)
Reserve for product warranty, end of period	$	1,849		$	885		$	1,849		$	885

Other Commitments and Contingencies

The following table reflects obligations not reflected on the Consolidated Balance Sheet as of March 28, 2015:



			Payments due by fiscal year
(in thousands)	Total		2015		2016		2017		2018		thereafter
Inventory purchase obligation (1)	$	110,509	$	110,509	$	—	$	—	$	—	$	—
Operating lease obligations (2)	29,479		2,708		3,987		3,391		2,762		16,631
Total	$	139,988	$	113,217	$	3,987	$	3,391	$	2,762	$	16,631


(1)	The Company orders inventory components in the normal course of its business. A portion of these orders are non-cancelable and a portion may have varying penalties and charges in the event of cancellation.


(2)	The Company has minimum rental commitments under various leases (excluding taxes, insurance, maintenance and repairs, which are also paid by the Company) primarily for various facility and equipment leases, which expire periodically through 2018 (not including lease extension options, if applicable).

Pursuant to ASC No. 840, Leases, for lessee's involvement in asset construction, the Company was considered the owner of the Building during the construction phase of the ADL. The building was completed on December 1, 2013 and Pte signed an agreement with the Landlord to lease from the Landlord approximately 198,000 square feet, representing approximately 70% of the Building. Following the completion of construction, we performed a sale-leaseback analysis pursuant to ASC 840-40 and determined that because of our continuing involvement, ASC 840-40 precluded us from derecognizing the asset and associated financing obligation. As such, we reclassified the asset from construction in progress to Property, Plant and Equipment and began to depreciate the building over its estimated useful life of twenty-five years. We concluded that the term of the financing obligation is 10 years. This is equal to the non-cancellable term of our lease agreement with the Landlord. As of March 28, 2015, we recorded a financing obligation related to the Building of $17.5 million (see Note 8 above). The financing obligation is not reflected in the table above.

Concentrations

There is no significant customer that represents 10% or more of our net revenue for the six months ended March 28, 2015 and March 29, 2014.

The following table reflects significant customer concentrations as a percentage of total accounts receivable as of March 28, 2015 and March 29, 2014:

March 28, 2015

March 29, 2014

Haoseng Industrial Co., Ltd