9. Restructuring

During 2016, we recorded total restructuring charges of $1.9 million which were classified within our consolidated statement of operations as follows: $0.1 million in research and development and $1.8 million in general and administrative.

Q2 2015 Restructuring Plan

During the second quarter of 2015, our Board of Directors authorized, and we implemented a restructuring plan (the “Q2 2015 restructuring plan”) that included a reduction in work force as part of the overall plan to reduce the Company’s long-term cost structure. As a result of ongoing initiatives associated with restructuring, we recorded a charge of $0.9 million in 2016, which is included in operating expenses in our consolidated statement of operations. The remaining liability related to our Q2 2015 restructuring plan as of December 31, 2016 was $19.4 million and is expected to be paid out over the next 5.4 years.

The following table presents the activity for each quarter of 2016 and for full year 2016 related to the Q2 2015 restructuring plan (in thousands):

	Three Months Ended
	March 31, 2016			June 30, 2016			September 30, 2016			December 31, 2016			Twelve Months Ended December 31, 2016
Restructuring liability - beginning of period	$	26,406		$	25,089		$	21,837		$	20,808		$	26,406
Restructuring expense and adjustments		456			417			50			3			926
Cash payments, net of receipts		(1,773	)		(3,669	)		(1,079	)		(1,423	)		(7,944	)
Restructuring liability (Q2 2015 Plan) - end of period	$	25,089		$	21,837		$	20,808		$	19,388		$	19,388

Q1 2014 Restructuring Plan

The following table presents the activity for each quarter of 2016 and for full year 2016 related to a restructuring plan put in place in the first quarter of 2014 (in thousands):

	Three Months Ended
	March 31, 2016			June 30, 2016				September 30, 2016			December 31, 2016			Twelve Months Ended December 31, 2016
Restructuring liability - beginning of period	$	2,290		$	1,525			$	2,184		$	16		$	2,290
Restructuring expense and adjustments		16			1,267		⁽¹⁾		(104	)		(202	)		977
Cash payments, net of receipts		(781	)		(608	)			(2,064	)		218			(3,235	)
Restructuring liability (Q1 2014 Plan) - end of period	$	1,525		$	2,184			$	16		$	32		$	32

⁽¹⁾	A $1.3 million adjustment was recorded in the second quarter of 2016 to increase our restructuring liability as a result of revising the expected income from a subtenant in a data center facility we had previously vacated in the first quarter of 2014.

Other Restructuring Plans

The following table presents the activity for each quarter of 2016 and for full year 2016 related to all other remaining historical restructuring plans from prior years (in thousands):

	Three Months Ended
	March 31, 2016				June 30, 2016			September 30, 2016			December 31, 2016			Twelve Months Ended December 31, 2016
Restructuring liability - beginning of period	$	332			$	(82	)	$	83		$	67		$	332
Restructuring expense and adjustments		(10	)			18			6			7			21
Cash payments, net of receipts		(404	)			147			(22	)		(23	)		(302	)
Restructuring liability (Other Plans) - end of period	$	(82	)	⁽¹⁾	$	83		$	67		$	51		$	51

⁽¹⁾	The liability is a net receivable due to the timing of sublease income for restructured data center space in Virginia.