Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 2014

Commitments And Contingencies Disclosure [Abstract]

Summary of Liability Related to Lease

The following table provides information about the Company’s liability related to the lease (in thousands):

	2014			2013
Beginning balance, January 1	$	1,787		$	1,103
Net rental receipts (payments)		(162	)		(110	)
Accretion of discount		35			21
Increase in net estimated contract termination costs		567			—
Ending balance, March 31	$	2,227		$	1,014

Summary of Reconciliation of Company's Warranty Reserve

The following is a reconciliation of the Company’s warranty reserve (in thousands):

	2014			2013
Beginning balance, January 1	$	40,812		$	28,987
Changes in estimates related to pre-existing warranties		—			—
Settlements made during the period		(2,010	)		(1,681	)
Ending balance, March 31	$	38,802		$	27,306